Filter out .mov & .wmv in your keyword filter. That will help get rid of the porn. How to use the Keyword Filter. (or to totally filter porn out see Direct instructions to eliminate porn from results)

If you don't have luck with one search technique, then try another. Sometimes videos can be found by searching the main actor or producer or the episode name, etc. I haven't heard of people offering all episodes of a series all in one file before.