Perhaps you should try some spelling variations:
ryan john » brian john, tian john
wang anh » dang anh, wang yang, wang yan
anh tuan » anh tran, dinh tuan, oanh tran
tuan hua » tan hua, tuan vu, yuan hui
yan john » gain john, tian john, von john
wong sam » wong sau, wong lai, kong sar
hua ren » hua chen

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang anh tuan hua ren ((yan john) OR (ryan john)) wong sam ;~".
• Adding a wildcard symbol may retrieve word variants: wang anh tuan hua ren ((yan john) OR (ryan john)) wong sam ;*.