Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
khan sher » han shen, than she
khan syed » ahsan syed, shah syed
chang min » zhang ming, chang mae, chan ming
zhong zhi » hong ghi, zhong tai
zhang zhi » wang zhi, zhang wei, zhang dai
yang dan » yang dean, yang fan, wang dan

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 dan ((khan sher) OR (khan syed)) chang min ((zhong zhi) OR (zhang zhi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang dan ((khan sher) or (khan syed)) chang min ((zhong zhi) or (zhang zhi)) ;*.