Perhaps you should try some spelling variations:
john wong » john song, john bonn
chen king » chen ping, chen jing, machen king
wing yan » wang yan, wing ian, wing tan
yang yun » yang jun, yang yue, yang yang
tang yun » chang yun, fang yuan, tang chun
wong sar » kong sar, wong sam, wong sau
yang yu » yang yue, yang yi, sang yu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing yan ((yang yu) or (((yang yun) OR (tang yun)))) chen king john wong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((yang yu) OR (((yang yun) OR (tang yun)))) chen king john wong sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ((yang yu) or (((yang yun) OR (tang yun)))) chen king john wong sar ;".
• Adding a wildcard symbol may retrieve word variants: wing yan ((yang yu) or (((yang yun) OR (tang yun)))) chen king john wong sar ;*.