Perhaps you should try some spelling variations:
zhang minh » zhang ming, chang min, sang minh
wang yuan » wang yuhan, wang yan, fang yuan
yuan wang » yan wang, yuan kang, yuan chang
zhang xin » zhang jian, zhang ming, zhang fan
zhong zhi » zhang zhi, hong ghi, zhong tai
hua chen » jui chen, yu chen, a 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 yuan wang hua chen ((zhang minh) or (zhang xin)) zhong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuan wang hua chen ((zhang minh) OR (zhang xin)) zhong zhi ;.
• Adding a wildcard symbol may retrieve word variants: wang yuan wang hua chen ((zhang minh) or (zhang xin)) zhong zhi ;*.