Perhaps you should try some spelling variations:
china chen » china shen, china china, china chang
doing sin » dong sin, doing un, doing von
tan china » tuan china, than china, can china
yan liang » yang liang, wang liang, you liang
chen yan » chen yang, chen tan, chen yun
wong siu » wong shiu, kong siu, wong sau
sin tan » sin tax, tin tan, sin cain

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

• Performing a fuzzy search may retrieve terms with similar spellings: doing sin tan china chen yan liang ((wong siu) or (wang hua)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doing sin tan china chen yan liang ((wong siu) OR (wang hua)) ;.
• Adding a wildcard symbol may retrieve word variants: doing sin tan china chen yan liang ((wong siu) or (wang hua)) ;*.