You can create a link to a specific subset of materials by searching the Library Catalog and linking to the resulting URL. It can be a list of items by a certain author, on a certain subject, or results of a search with limiters applied.
Example 1: results list for the subject "Educational Technology."
Display the results and copy the existing URL into your course page.
Example 2: results list for a keyword search "feature films" limited to language "Chinese" and videos/DVDs.
Perform a search and copy the existing URL into your course page.