For me the idea that poor quality search results are a bug muddies the idea of what a bug is. It's like saying the colour of the paint in my living room is buggy because I don't like it. It might be an ugly colour that I don't like, but it is what it is. A bug would be if the colour doesn't match what was shown on the tin.

> If the search bears little connection to what was searched for, then it is a bug, as far as the user is concerned.

A bad product perhaps, but not a bug.