Perhaps you should try some spelling variations:
chai wang » chen wang
wang sang » wang yang, wang liang, wang yan
sang minh » kang minah, anh minh, song min
zhong tai » hong tan, hong hai, zhong zhi
shang hai » shang kai, dang hai, chang ha
wan yang » wang yang, dan yang, tan yang
yang ka » yang fan, yang yao
ka chai » ka chuan, kim chai

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: wan yang ka chai wang sang minh ((zhong tai) OR (shang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yang ka chai wang sang minh ((zhong tai) or (shang hai)) ;*.