Can't fix the problem but can give advice for the future. Next time you find somebody who has several files you want, then make a note of their ip. So then another day you can try to Direct Connect using that type of search.

For now I'd suggest you try variations of searches using a Any Type search. Vary the name, use the directors name, or composer's name.

You might have been unlucky b/c that person was not online at that time you searched. They might only be online some days a week. But other people may also have those files. Also keep in mind not everybody labels files the same way & sometimes make mistakes. So mispelling your search can sometimes find surprisingly good results for what you'e looking for.