Perhaps you should try some spelling variations:
wong john » wrong john, kong john, longo john
chen wong » chen rong, chen wang, chen yong
john wong » john song, john bonn
wing tan » wing ian, liang tan, hong tan
yang hua » wang hua, yang jui, wang hui
yang hui » yang jui, wang hui, yang muxi
ying hua » ming hua, wang hua, ying zhu
wong sar » kong sar, wong sam, wong sau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wing tan) or (wang yan)) ((((yang hua) OR (yang hui))) or (ying hua)) chen wong john wong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wing tan) OR (wang yan)) ((((yang hua) OR (yang hui))) OR (ying hua)) chen wong john wong sar ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing tan) or (wang yan)) ((((yang hua) OR (yang hui))) or (ying hua)) chen wong john wong sar ;*".