When you perform a search, it lists the search results.
Since the search results screen consists of multiple areas, we will explain them separately by area.

4-1 Search Condition Specification Area

You can search and narrow down again by entering or changing the search conditions.
The basic user interface is the same as the simple search screen. For details, see Simple Search Description.
If you are searching, the year of publication and the checkbox selection type search items (material type, collection, place of ownership, holding institution, NDC, genre/format terminology, Internet browsing, database, media type) will display a breakdown of the number of hits⁽¹⁾⁽²⁾. The year of publication is calculated and displayed by age. Please use it as a hint when narrowing down.

4-2 Current search condition area

This is the area where the currently specified search conditions are displayed.
Even if you scroll down the screen, it will continue to appear at the top of the screen.
From this area, you can shortcut to the search condition specification area or remove unnecessary search conditions.

4-3 Material list Area

Displays a list of materials that match the search criteria.

Upper part of the material list area

• Number of searches (3-a)
  Displays the number of materials that match the search criteria.
  If the "Group by title" button is turned off, a page movement area will be displayed next to the number of searches.
• Results per page (3-b)
  You can change results per page displayed. You can choose 20, 50, or 100.
  Please select the number of results you want to display.
  If you are logged in, the settings for the results per page you selected will be saved.
• Display mode switch button (3-c)
  You can select the display mode from list view, thumbnail view, and table view. For details, see [Display Mode Description] (#display).
• Sort options (3-d)
  You can change the sort order. You can select relevance, title (ascending/descending), year(newest or oldest), author name (ascending/descending), or call number. In order of title and author's name, it is displayed in Kana order based on the pronunciation value.
  Please select the sort order.
  If you are logged in, the selected sort order settings are saved.
• "Group by title" button (3-e)
  This is a button that allows you to choose whether to display volume materials such as magazines together by title or without grouping them. In the initial state, it is ON. For more information on volume and title terminology, see Hierarchical Structure of Bibliographies in NDL Search. Each of them has the following characteristics:
  • "Group by title" ON
    The volume number is displayed under the title. The volume issue is displayed together for each title, so please use it if you want to quickly get to the title of the magazine you are looking for. If you sort by year of publication, it will be sorted by the year of publication of the title-level bibliography, not the year of publication of each volume. If you want to sort strictly by year of publication, please turn off "Group by title".
    In addition, pagination is not possible when the display format is grouped by title to maintain search performance. You can load the rest of the search results by pressing "Show more" at the bottom of the search results.
  • "Group by title" OFF
    Volume issues are not linked to the title and are displayed separately in the search result list. In addition, pagination is possible. If you select the arrow button next to the number of searches (3-a) at the top of the search result list or at the bottom of the page (3-h), you can move to the next or next page, and enter a number to move to that page.
    *The maximum number of items that can be displayed by NDL search is 10,000. For example, if you display 20 documents on one page, 500 pages is the maximum number of pages. If you exceed the pagination limit, a message "Please refine your search criteria." will be displayed. I get an error message. Please narrow down your search results or consider API.
• Add all to My list (3-f)
  You can add all the materials in the list to your My list. For more information, see My list.
• Page movement (bottom of list) (3-h)
  Select the arrow buttons to go to the next page, and select a number to go to that page. This is displayed only when "Group by title" is turned off.
• Bulk download of bibliographic information (3-i)
  Outputs the bibliography of the search result list at once. For details, see bibliography download.

Bibliographic Information (3-g)

As a search clue, the same materials held by multiple institutions are displayed together. The form and availability of materials may differ depending on the institution, so please check the bibliographic records screen for details.

• Thumbnail (4-a)
  If there is a thumbnail of the material, it will be displayed in this area. If there is no thumbnails of the material, an icon will be displayed. Thumbnails are displayed when there is at least one material image in the linked data of each institution. Therefore, the appearance of the materials held by each institution may differ. For details, see "Thumbnail and material Icon".
• Title (4-b)
  The title of the article. If there is volume information, it will be displayed concatenated.
• Media Type/Material Type (4-c)
  Media Type as an icon and Material Type as text. Even the bibliographic information displayed together may be in different forms depending on the institution. In addition, if materials for persons with disabilities are available, they will be displayed in this area.
• Author, Publisher, Year, Call Number (4-d)
  Author | Publisher | Year |<Call No.> and so on. Call No. displays the call number of the National Diet Library.
• Add My list button (4-e)
  If you are logged in, add the bibliography to your My list. If you've already added it, remove it from your My list.
• Holding status icon (4-f)
  If the collection is held by the National Diet Library or other libraries in Japan with which NDL Search is collaborating, the icon will be displayed. In addition, if the material available via Internet is included, an additional icon will be displayed.
  In addition, the holding status of the Tokyo Main Library, Kansai-kan, and International Library of Children's Literature is displayed on the NDL premises.
• Highlighting of search hits (4-g)
  If the search results for the content, table of contents, summaries, abstracts, etc., the part that was hit will be displayed.

When searching, if the "Group by title" button is turned on and a material with multiple volume issues, such as a magazine, is found, a link to each volume will be displayed under the title-level bibliography.

• List of volumes (4-h)
  Displays the volume number that matches the search conditions. When you click on a volume number, you will be redirected to the bibliographic records screen for that volume. If the table of contents information is a hit in the search, the part that was hit will be displayed.
• See more (4-i)
  In the initial state, 5 volume numbers are displayed. You can increase the number of displays to 50 by clicking "See more". If you would like to check the volume number further, click "Search more on bibliographic records screen " displayed and check from the "List of volumes with this title" on the bibliographic records screen.

Related Information Area (1-d)

Perform a cross-search based on the search conditions and display related information.

• Hints and examples (5-a)
  Research Navi and Collaborative Reference Database, and display related research guidance and examples of other people's research.
• Text (5-b)
  "Full-text search of digital materials" displays the results of a search for the full text of materials in the National Diet Library Digital Collections. For more information on the scope of the target materials, see How to use full-text search.
  "Full-text search of past websites" displays the results of full-text searches of past websites collected by the National Diet Library Internet Archiving Project(https://warp.ndl.go.jp/).
• Database of various materials
  NDL Image Bank and Japan Search. Among the systems operated by the National Diet Library, databases that cover areas other than the use of library materials, such as those that are intended for the use of content and those that include materials other than libraries, are targeted.
• Related terms and dictionaries
  Among the data in the database linked with NDL Search, the data of the database has properties such as thesaurus, dictionaries, and indexes. For details on target databases, see Search target database.

4-4 Detailed specification of the search results list

Display Mode Description