Perhaps you should try some spelling variations:
yan tuan » yan guan, yan yuan, anh tuan
chen loo » chen hao, chen co, chen l
loo john » longo john, cox john, seo john
wong sam » wong sau, kong sar, von sam
tuan vu » thanh vu, tuan hua
vu chen » yu chen, jui chen, yu cheng
wang » wing, wan, lang

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 yan tuan vu chen loo john ((((wong sam) OR (wong lai))) OR (kong (sar OR saur))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan tuan vu chen loo john ((((wong sam) OR (wong lai))) or (kong (sar or saur))) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan tuan vu chen loo john ((((wong sam) OR (wong lai))) or (kong (sar or saur))) ;*.