Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
wong shiu » wong siu, cong shu, song shin
wai daun » bei daun, wai fun, wai yan
lin sang » shin sang, lee sang, kil sang
tong hui » wang hui
yang yi » yang di, yang jui
yang xi » yang di, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: wai daun ((yang yi) OR (yang xi)) lin sang minh ((wong shiu) or (tong hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wai daun ((yang yi) OR (yang xi)) lin sang minh ((wong shiu) OR (tong hui)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wai daun ((yang yi) OR (yang xi)) lin sang minh ((wong shiu) or (tong hui)) ;*".