Perhaps you should try some spelling variations:
wang xiaotong » wang xiaodong, wang xianodong, wang xiaoping
zhang ching » zhang ming, zhang hong, zhang jing
hang china » han china, change china, ghana china
dang hari » dang hai
fang jie » yang jie, fang ke, yang jin
tang jie » yang jie, tang li, yang jin

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 ching) OR (hang china)) wen ((fang jie) OR (tang jie)) dang hari ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang xiaotong ((zhang ching) OR (hang china)) wen ((fang jie) or (tang jie)) dang hari ;~".
• Adding a wildcard symbol may retrieve word variants: wang xiaotong ((zhang ching) OR (hang china)) wen ((fang jie) or (tang jie)) dang hari ;*.