Perhaps you should try some spelling variations:
wang daoping » wang xiaoping, wang danning, wang xiaobing
tuan china » wuhan china, can china, taiwan china
china dan » china den, china data, china des
amin hong » min hong, among hong, asia hong
dan yang » daun yang, tan yang, wang yang
tin hong » tan hong, kia hong, thi hong

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 daoping tuan china dan yang ((amin hong) OR (tin hong)) hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang daoping tuan china dan yang ((amin hong) or (tin hong)) hai ;*.