Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan wang » yuan wang, yan wang, yuhuan huang
zhang minh » zhang xin, sang minh, zhang jin
zhang ming » zhang xin
chang min » chang mae, chan ming, chang ann
zhong zhi » zhang zhi, hong ghi, zhong tai
hua ren » hua chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhan wang hua ren ((((zhang minh) OR (zhang ming))) or (chang min)) zhong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan wang hua ren ((((zhang minh) OR (zhang ming))) OR (chang min)) zhong zhi ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuhan wang hua ren ((((zhang minh) OR (zhang ming))) or (chang min)) zhong zhi ;*".