Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yan
wong john » wrong john, kong john, longo john
yuan hui » yuan fei, jaan hui, tuan hua
thanh vu » thanh van, thanh _
wong sam » wong lai, kong sar, wong max
wong sau » wong siu, wong shiu, wong lai
von sam » von sa, von sap, von scham

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