Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
sang minh » kang minah, anh minh, song min
yang lin » yang jin, wang lin, yang li
tang min » chang min, yang mind, tang li
tong hui » wang hui
lin lee » jin lee, lin see, lean lee

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yang lin lee ((tang min) or (sang minh)) tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang lin lee ((tang min) OR (sang minh)) tong hui ;.
• Adding a wildcard symbol may retrieve word variants: wang yang yang lin lee ((tang min) or (sang minh)) tong hui ;*.