Perhaps you should try some spelling variations:
wang xiaobing » wang xiaoping, wang xiaodong, wang xiaolin
wang daoping » wang xiaoping, wang danning, wang yanling
china daun » china data, china due, china daqing
yang cindy » yang mind
china den » chinas den, china des, china does
dang hari » dang hai

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) OR (wang xiaobing)) wuhan ((china daun) OR (china den)) yang cindy dang hari ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang daoping) or (wang xiaobing)) wuhan ((china daun) OR (china den)) yang cindy dang hari ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang daoping) or (wang xiaobing)) wuhan ((china daun) OR (china den)) yang cindy dang hari ;*.