Perhaps you should try some spelling variations:
chen wong » chen rong, chen wang, chen yong
liang tan » liang dan, liang sun
wong john » wrong john, kong john, longo john
john song » john wong, john bonn, john ngosong
wing tan » wing ian, hong tan, tin tan
yang hua » wang hua, yang hui, ying hua
song sar » kong sar, using sar, song pae

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 zhu)) chen wong john song 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 zhu)) chen wong john song 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 zhu)) chen wong john song sar ;*".