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

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 xiaojing) OR (wang xiaoping)) a chia tan ((yang wind) OR (yang cindy)) data (hai OR hari) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang xiaojing) OR (wang xiaoping)) a chia tan ((yang wind) or (yang cindy)) data (hai or hari) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang xiaojing) OR (wang xiaoping)) a chia tan ((yang wind) or (yang cindy)) data (hai or hari) ;*.