Perhaps you should try some spelling variations:
wang xiaotong » wang xiaodong, wang xianodong, wang xiaobing
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
zhang ching » zhang ming, hang china, zhang hong
ching wen » ching kwan, ching fein, ching hea
jie zhang » jia zhang, li zhang, bin zhang
wen fang » weng fang, wen wang, yin fang
jie dang » vie dans, bie dans, jie song

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