With all due respect, please read Sticky's guidlines for good forum usage. We need all general systems info for as broad a question as this.Things to consider:
Are filters being applied to limit returns(check tools/options/search) by quality or file type? If so remove the restrictions.
If you have a slow modem you may need to wait more than a few minutes for results to return.
If you are looking for obscure cult films or rare live audio clips, some of us heavy p2p users have also experenced declining numbers of search returns and slow DL speeds, and have discussed it in these forums. Look for them if you are interested.