i don't know why sometimes i can't see the results. i type an artist name and the result bar indicates that it is progressing, but i can't see the list of results. does anyone know how i shuld fix this problem?

It happens to me, too. I believe that your search simply returns 0 results. That is, no one is sharing what you are looking for. I do, however, find this a little hard to believe, since there is so much spam on the network.

Try right-click(on your search term)...search more...get more results. You can do this as many times as you want. Available files change constantly!

Good Luck