Perhaps you should try some spelling variations:
xiaoping zhang » xiaotong zhang
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
zhang hua » zhang hui, zhang shuo, wang hua
ran yang » ran ying, tan yang, wang yang
dan yang » daun yang, tan yang, wang yang
jie hong » jie song, xie hong, jie zhang
tan » than

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 xiaoping zhang hua ((ran yang) OR (dan yang)) jie hong tan ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaoping zhang hua ((ran yang) or (dan yang)) jie hong tan ;*.