Use the search bar above the Match Section to search for people with a specific interest, major or to find someone specific. The match section will update with users who match your keyword filter.
If you are looking for a specific person and they are not showing up, it is most likely that they have not yet created their MCR profile yet. In order for the Search Bar to find them, they must be an active user with a profile, so if you can't find them, please wait until they log in and create their profile!