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, chang min, sang minh
zhang ming » zhang xin
zhong tai » hong tan, zhong zhi
hua shen » hua chen, han shen, hua ren
hong hai » shang hai, dang hai, hong tan

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 shen ((zhang minh) or (zhang ming)) ((hong hai) OR (zhong tai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan wang hua shen ((zhang minh) OR (zhang ming)) ((hong hai) OR (zhong tai)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuhan wang hua shen ((zhang minh) or (zhang ming)) ((hong hai) OR (zhong tai)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yuhan wang hua shen ((zhang minh) or (zhang ming)) ((hong hai) OR (zhong tai)) ;*.