Hi Kitti, I can feel your frustration but there are a few things that you can try that work for me.
First ALWAYS use Bitzi while searching for video files. To use, Right click on file in search. Go to Advanced > Lookup file with Bitzi. If it comes back with Bitprint not found then that is either a Fake or Corrupted File. If it comes back as a good file then you can read how the file was rated by other hosts.
Now when you fing a good file and it has little or no hosts and its dn/lding very slow, Right click the file, go to search more then to get more results. Wait until it stops searching and repeat the above steps as many times as it takes. It will find more sources but may take awhile. Hope this helps.