And is that unavoidable?

I'm searching on two hard drives for "fish" as a text query. I'm including: (*.doc*+-~*)

I know the word occurs in the content and in the name of a word file that's open.

I find it hard to believe that it occurs nowhere in thousands of culture & lit crit files on this machine, and generally I don't seem to be finding files I'm looking for. I can't figure outwhat I'm doing wrong.