Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan wang » yiqian wang, qian wang, yan wang
chen zhang » cheng zhang, zhen zhang, chen zheng
zhang ming » zhang xin
hua chen » jui chen, yu chen, a chen
hong ghi » zhong zhi, hong g, hong hai
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yidan wang hua chen zhang ming ((hong ghi) or (dang hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yidan wang hua chen zhang ming ((hong ghi) OR (dang hai)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yidan wang hua chen zhang ming ((hong ghi) or (dang hai)) ;*.