Perhaps you should try some spelling variations:
yunnan china » urban china, tuan china, wuhan china
yuan hui » yuan fei, jaan hui, tuan hua
tan yang » dan yang, tan ying, tan yong
yang gao » yang yao, yang fan, xing gao
gao dang » gao shang, gao nan, gao ying
wang » wing, wan, lang
hai » hadi, haji, hari

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 yan ((yuan hui) OR (yunnan china)) tan yang gao dang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan ((yuan hui) or (yunnan china)) tan yang gao dang hai ;*.