Finding materials geared toward learning a language will have subheading after the subject of the language such as:
If looking for teachers editions of k-12 textbooks - search the language and limit to Curriculum collection:
Authored books offer a chance to learn about a subject in-depth. Edited books can provide a chapter or chapters targeted at your topic.
Library Catalog (LibrarySearch): http://librarysearch.uoregon.edu
If you want only books/videos/music in the UO Library system:
To broaden your search - If you want books/videos/music in the UO Library system and the consortium of 37 colleges and universities in Oregon, Washington, and Idaho: use UO and Summit (Summit materials generally arrive within five days)
If you want to broaden your search even further - Use WorldCat to search beyond the UO Library and the consortium. These materials are requested through Interlibrary Loan and may come from any library (Books and AV items arrive within an average of 10 days.) On the Libraries' homepage http://library.uoregon.edu/ you'll see: