Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
xiaoping tan » xiaoyang tang, xiaojing a, xiaoping _
yang cindy » yang mind
yang wind » yang mind, yang jin, yang jing
tan chia » tuan china, than china, can china
chia tan » chia lan, chen tan, chia wen

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 xiaoping tan chia tan ((yang wind) OR (yang cindy)) data (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaoping tan chia tan ((yang wind) or (yang cindy)) data (hai or hari) ;*.