I searched for 'bobs' on msn. Results=193639 hits.
LW's search works in the same manner except your searching a database of mostly music, programs, movies, photos, ect...not webpages and articles.
There are always going to be erroneous hits within any search, some bogus, some not. I would be glad that you are getting a large number of results back from your searches. You'll notice many people can't seem to grasp the whole search thing at all.

I wouldn't worry about this stuff, just scroll through the list and download what your looking for.