Perhaps you should try some spelling variations:
young john » kong john, wong john, young jean
wang wang » wang yang, wang liang, wang yan
john wong » john song, john bonn
yuan hui » yuan fei, jaan hui, yang hui
tuan hua » tan hua
wong sam » wong sau, wong lai, kong sar
tuan vu » thanh vu

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 wang ((yuan hui) OR (((tuan vu) OR (tuan hua)))) irene young john wong sam ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang ((yuan hui) or (((tuan vu) OR (tuan hua)))) irene young john wong sam ;~".
• Adding a wildcard symbol may retrieve word variants: wang wang ((yuan hui) or (((tuan vu) OR (tuan hua)))) irene young john wong sam ;*.