For all sections of the media library, you can search through the items. In the case of art reference, the search will occur through the keywords. For all other media (scripts, storyboards, and videos), the description will be searched.
NOTE If some files appear to be missing in one of the media library sections, it is possible that a previous search is still in effect, restricting what references are being displayed. To clear a previous search, follow these steps. If the Search Filter area is hidden, this may not be obvious and it may seem like some references are missing. You must open the Search Filter area by clicking on the Search Filters icon and make sure to clear previous entries. Remove any entry from the keywords dialog box and click Search again.