Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yong
wong john » wrong john, kong john, longo john
john wong » john song, john bonn
tuan hua » tan hua
yuan hui » yuan fei, jaan hui, yang hui
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) OR (wang yan)) ((((tuan hua) OR (yuan hui))) OR (tuan vu)) irene wong john wong sam ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang wang) or (wang yan)) ((((tuan hua) OR (yuan hui))) or (tuan vu)) irene wong john wong sam ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang wang) or (wang yan)) ((((tuan hua) OR (yuan hui))) or (tuan vu)) irene wong john wong sam ;*.