Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
china zhang » china chang, cheng zhang, chin chang
than china » tuan china, han china, can china
zhang hai » zhang dai, shang hai, zhang han
tan yang » tan ying, tan yong, tao yang
dan yang » daun yang, wang yang, yang yang

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: (wan OR lang) yanling ((than china) OR (wuhan china)) ((tan yang) OR (dan yang)) china zhang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wan or lang) yanling ((than china) or (wuhan china)) ((tan yang) OR (dan yang)) china zhang hai ;~".
• Adding a wildcard symbol may retrieve word variants: (wan or lang) yanling ((than china) or (wuhan china)) ((tan yang) OR (dan yang)) china zhang hai ;*.