Perhaps you should try some spelling variations:
zhang ming » zhang xin
zhang minh » zhang xin, chang min, sang minh
qiao wang » qian wang, xiao yang
wang khan » wang shawn, wang yuhan, wang yan
khan syed » ahsan syed, shah syed, khan sher
zhong zhi » zhang zhi, hong ghi
zhong tai » hong tan, hong hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang qiao wang khan syed ((zhang minh) or (zhang ming)) ((zhong zhi) or (zhong tai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang qiao wang khan syed ((zhang minh) OR (zhang ming)) ((zhong zhi) OR (zhong tai)) ;.
• Adding a wildcard symbol may retrieve word variants: wang qiao wang khan syed ((zhang minh) or (zhang ming)) ((zhong zhi) or (zhong tai)) ;*.