To change the sort order of the items in the library view, select the Change Sort item, which is the right most item on the search bar. You can change the sort order from ascending to descending, or select a new field to sort by.
The Search function which is depicted in use below with the input of "America," scans each piece of content a user has access to and returns relevant results. After typing in something in the text box, you can either press then enter key or click on the search button.
Library View with Search results