Perhaps you should try some spelling variations:
wang xiaotong » wang xiaodong, wang xianodong, wang xiaoping
zhang zhang » zhen zhang, cheng zhang, zhang fang
chen wang » chen yang, chen rong, chen ping
dang hari » dang hai
wen wang » wei wang, weng fang, men want
jie dang » jie zhang, vie dans, bie dans

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 xiaotong zhang zhang ((wen wang) OR (chen wang)) jie dang hari ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaotong zhang zhang ((wen wang) or (chen wang)) jie dang hari ;*.