Perhaps you should try some spelling variations:
china chen » china shen, china china, china chang
ping liang » peng liang, wang liang, ping lin
doing sin » dong sin, doing un, doing von
tan china » tuan china, than china, can china
chen ping » chen rong, chen yang, chen wang
wong shiu » wong siu, cong shu, song shin
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 ping liang ((wong shiu) or (wang hua)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doing sin tan china chen ping liang ((wong shiu) OR (wang hua)) ;.
• Adding a wildcard symbol may retrieve word variants: doing sin tan china chen ping liang ((wong shiu) or (wang hua)) ;*.