Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
sang minh » kang minah, anh minh, song min
gong hui » tong hui, tong shui, wang hui
wong siu » wong shiu, kong siu, wong sau
yang li » yang lin, yang di, yang yi
yang xi » yang di, yang yi, yang jui
li sang » le sang, li gang, li san

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 li) or (yang xi)) li sang minh ((gong hui) or (wong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang ((yang li) OR (yang xi)) li sang minh ((gong hui) OR (wong siu)) ;*.