Perhaps you should try some spelling variations:
wang xiaotong » wang xiaodong, wang xianodong, wang xiaoping
zhang china » hang china, change china, zhejiang china
china chen » china shen, china china, china chang
yang guang » yang yang, yan guan, yang liang
chen wang » chen yang, chen rong, chen ping
wang yang » wang yan, wang liang, wang yanling

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 china chen wang yang guang (hai OR hadi) ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaotong zhang china chen wang yang guang (hai or hadi) ;*.