Perhaps you should try some spelling variations:
yan zhang » yuan chang, bin zhang, han chang
zhang jun » zhang jin, zhang jian, zhang jing
yang yang » wang yang
shang hai » shang kai, dang hai, chang ha
jun rene » juan rene, un reve
yang tan » yang fan, yang dean, liang tan
hong hai » zhong tai, dang hai, hong tan
wang » wing, wan, lang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan zhang jun rene ((yang tan) OR (yang yang)) ((hong hai) OR (shang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan zhang jun rene ((yang tan) OR (yang yang)) ((hong hai) or (shang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan zhang jun rene ((yang tan) OR (yang yang)) ((hong hai) or (shang hai)) ;*.