Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
wong shiu » wong siu, cong shu, wong sau
yang yao » yang yang, wang yan, yang yi
ren sang » lee sang, le sang, ren weng
wong sam » wong sau, wong lai, kong sar
yan y.c » yang y.c
hua ren » hua chen
shin » skin, sein, thin

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

• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((yan y.c) OR (yang yao)) hua ren sang minh ((wong sam) OR (((wong shiu) OR (song shin)))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((yan y.c) or (yang yao)) hua ren sang minh ((wong sam) or (((wong shiu) OR (song shin)))) ;~".
• Adding a wildcard symbol may retrieve word variants: lang ((yan y.c) or (yang yao)) hua ren sang minh ((wong sam) or (((wong shiu) OR (song shin)))) ;*.