Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
tong shui » tong hui, cong shu, gong hui
yang lin » yang jin, wang lin, yang li
yang xi » yang di, yang yi, yang jui
xu sang » du sang, xu gang
long du » long d, long do, long run
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan ((yang lin) or (yang xi)) xu sang minh ((long du) or (tong shui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((yang lin) OR (yang xi)) xu sang minh ((long du) OR (tong shui)) ;*.