Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
gain yang » daun yang, tan yang, yin yang
yao chang » yeo chang, yuan chang, gao shang
dan yang » daun yang, tan yang, wang yang
yao yang » yang yang
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)) ((gain yang) OR (dan yang)) ((yao chang) OR (yao yang)) ha ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((tan hua) or (wuhan china)) ((gain yang) or (dan yang)) ((yao chang) OR (yao yang)) ha ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ((tan hua) or (wuhan china)) ((gain yang) or (dan yang)) ((yao chang) OR (yao yang)) ha ;*.