Perhaps you should try some spelling variations:
chia rene » china ren
wong john » wrong john, kong john, longo john
lang yan » wang yan, wang yang, zhang yan
chia wen » china won, ching wen, asia wen
yang jun » yang jui, pang jun, yang jin
wong sam » wong sau, wong lai, kong sar
yan tan » tan tan, yan clan, yan guan

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan tan ((chia rene) OR (chia wen)) ((yang jun) or (wong john)) wong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan tan ((chia rene) OR (chia wen)) ((yang jun) OR (wong john)) wong sam ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan tan ((chia rene) OR (chia wen)) ((yang jun) or (wong john)) wong sam ;".
• Adding a wildcard symbol may retrieve word variants: lang yan tan ((chia rene) OR (chia wen)) ((yang jun) or (wong john)) wong sam ;*.