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

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 guan chia rene ((yang jun) or (wong john)) wong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan guan chia rene ((yang jun) OR (wong john)) wong sam ;.
• Adding a wildcard symbol may retrieve word variants: lang yan guan chia rene ((yang jun) or (wong john)) wong sam ;*.