Perhaps you should try some spelling variations:
wang sang » wang yang, wang liang, wang yan
sang minh » kang minah, anh minh, song min
minh yang » amineh yang, minh cong, yin yang
zhang zhi » zhong zhi, wang zhi, zhang wei
wang lin » wang li, wang qin, yang lin
lin wang » li wang, limin wang, liqin wang
yang fan » zhang fan, yang dean, yang yang
hong a » hong ma, hong w, kong a

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang lin wang sang minh yang fan ((hong a) or (zhang zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang lin wang sang minh yang fan ((hong a) OR (zhang zhi)) ;.
• Adding a wildcard symbol may retrieve word variants: wang lin wang sang minh yang fan ((hong a) or (zhang zhi)) ;*.