Mislabelling is a user issue. Checking the file as downlding is wise. Also, porn sites & others will use search titles to help advertise their sites. Such files are usually less than 30 MB in size however.
1.
Movie download issues. Obviously a TV series is going to be smaller than a movie.
2. Get into the habit of using Bitzi to see if there's user feeback about particular files.
How to use Bitzi Web Lookup
3. Try alternate search techniques to find what you're after.
Can’t search well help
As you can see from the search below, there seems to be plenty. Also using a different search in the 2nd search, I was able to find more results. You'll also notice that the search results tallies have been automatically filtered by my past junk filter settings. Also notice I arranged my search results by size.