Perhaps you should try some spelling variations:
yunnan china » urban china, wuhan china, yunnan sheng
tuan china » wuhan china, can china, taiwan china
shang hai » shang kai, dang hai, chang ha
tan yang » dan yang, tan ying, tan yong
yang kia » yang ka, yang di, yang xi
hong hai » zhong tai, dang hai, hong tan
wang » wing, wan, lang

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 yanling ((tuan china) OR (yunnan china)) tan yang kia ((hong hai) OR (shang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yanling ((tuan china) or (yunnan china)) tan yang kia ((hong hai) or (shang hai)) ;*.