Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
yang yang » wang yang, wang yan
wong shiu » wong siu, cong shu, song shin
tong hui » wang hui
yang yi » yang di, yang jui
yang xi » yang di, 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: yang yang ((yang yi) or (yang xi)) li sang minh ((tong hui) or (wong shiu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ((yang yi) OR (yang xi)) li sang minh ((tong hui) OR (wong shiu)) ;*.