Perhaps you should try some spelling variations:
liang tan » liang dan, liang sun
chen wong » chen rong, chen wang, chen yong
wong john » wrong john, kong john, longo john
john wong » john song, john bonn
wing tan » wing ian, hong tan, tin tan
yang hua » wang hua, yang hui, yang jui
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 (liang tan))) or (wang yan)) ((yang hua) or (ying hua)) chen wong john wong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wing tan) OR (liang tan))) OR (wang yan)) ((yang hua) OR (ying hua)) chen wong john wong sar ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wing tan) OR (liang tan))) or (wang yan)) ((yang hua) or (ying hua)) chen wong john wong sar ;*".