Don't be surprised if your post is attacked by a Moderator with a bag of asterisks. You should not mention specifics on the forums ...
It is not a good idea to fill in more than one box on the Audio search. You get all sorts of irellevant results. Sometimes the artist followed by the song works in the All Categories search. Exactly what makes a search "too specific" I am not sure, and it is possible it crops up if the network is busy(possibly) but try a few different things ... entering part of a song title for instance and you might have more luck. Vary your search and find out what works for you