Yeah. You can search for PSN name in the normal text search.
Were you looking at the list of my hearted creators or were you looking at them on the planet? Because it only shows like 10 on the list. If you hit R1 when looking at my icon and all my levels you can go to hearted levels and then hearted creators. You should be able to find them all that way.
I just hearted the last 3 people up to FSUCure.
Games Completed '08
) - '09
) - '10
) - '11 (43) -'12 (15)
PS3 Trophy card: