Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
gao shang » gao zhong, hao zhang
shang hai » shang kai, dang hai, chang ha
tan yang » dan yang, tan yong, tao yang
tan ying » fan ying, ran ying, tan yong
tan hua » tuan hua, wang hua, tan chia
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 yan ((tan hua) OR (wuhan china)) ((tan yang) OR (tan ying)) gao shang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((tan hua) or (wuhan china)) ((tan yang) OR (tan ying)) gao shang hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ((tan hua) or (wuhan china)) ((tan yang) OR (tan ying)) gao shang hai ;*.