Perhaps you should try some spelling variations:
tian john » ethan john, tuman john, linn john
wang anh » dang anh, wang yang, wang yan
anh tran » oanh tran, anh tuan, binh tran
tran hua » tan hua, tuan hua, tran duc
hua chen » jui chen, yu chen, a chen
yan john » ryan john, gain john, von john
song sam » wong sam, kong sar, song pae

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wang anh tran hua chen ((((yan john) OR (tian john))) OR (brian john)) song sam ;~.
• Adding a wildcard symbol may retrieve word variants: wang anh tran hua chen ((((yan john) or (tian john))) or (brian john)) song sam ;*.