If your iTunes U site is included in the iTunes Store directory and you search your site from within the iTunes Store, your initial search returns all matches throughout all iTunes U sites, as well as all matches throughout the iTunes Store.
To narrow your initial search to your iTunes U site:
Choose iTunes U from the Power Search pop-up menu in the Search Results window.
iTunes displays only matches within iTunes U sites.
Click Power Search.
Type a title, description, or institution name in the search fields.
Click “Search for closed captioning in iTunes U” to search for iTunes U content containing closed captioning.
Click Search or press the Enter key.
iTunes displays only content within iTunes U that matches the title, description, institution, or closed captioning details you specified.
© 2009 Apple Inc. All Rights Reserved. (Last updated: 2009-11-04)