tedster - 12:59 am on Aug 12, 2008 (gmt 0) Does your domain name appear in the actual text of the page?
There were one or two similar observations here for the same thing. Not easy to say what's going on - it could be a data bug at Google, or it could even be a coding error on the particular page. A search like [title name + my domain name + keyword] is very specific, and sometimes they do fail, even though the page comes up in a more common query.
Does your domain name appear in the actual text of the page?