Searching within books is broken too. If you search for 'cat', any instance of the word 'cats' will also be returned (and any other word beginning with 'cat'),

Searching within books is broken too. If you search for 'cat', any instance of the word 'cats' will also be returned (and any other word beginning with 'cat'), but with the message, "No preview is available." No link to the page of the result is provided. It seems like the kind of bug that should be straightforward to locate and fix, but it has been this way for years. (My guess is that the tool that builds previews doesn't recognize partial matches.)