Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
tan ching » tan cheng, tuan china, ban chiang
ching lee » ching leo, ching hea, china led
sang minh » kang minah, anh minh, song min
yang tan » yang fan, yang dean, yang yang
sang min » song min, tang min, chang min
hong ghi » zhong zhi, hong g, hong hai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang tan ching lee ((sang min) OR (sang minh)) hong ghi ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang tan ching lee ((sang min) or (sang minh)) hong ghi ;*.