Perhaps you should try some spelling variations:
yunnan sheng » yunnan china
wang yunnan » wang yuhan, wang bingnan, wang youjuan
china gain » china grain, china main, china going
dang hadi » dang hai
chun wai » chun hui, chun i, chun lan
yang lin » yang jin, wang lin, yang li
yang jun » yang jui, pang jun, yang jin

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 yunnan sheng ((chun wai) OR (china gain)) ((yang lin) OR (yang jun)) dang hadi ;~.
• Adding a wildcard symbol may retrieve word variants: wang yunnan sheng ((chun wai) or (china gain)) ((yang lin) or (yang jun)) dang hadi ;*.