Do you see a number like 10/1167. If yes, then it will be for either of 2 reasons. 1. Your junk filter has detected most of those files as being junk. Thus you need to change your search techniques to find the "real" files.
2. You have pressed on one of the filters to the left of the search results so it only shows those files that aren't filtered out. eg: An any type search & you select audio filter ... it will only show audio files.

Also be aware that search results are grouped. So in the far left column you will see a column heading with # which means a certain no. of people have that file. Add all those under the # up & they will add up to the total of "good" files (ie: minus junk files.)