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

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan ((wang 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: lang yan ((wang lin) OR (yang xi)) xu sang minh ((long du) OR (tong shui)) ;*.