Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
wang yang » wang yan, wang liang, wang yanling
yuan hui » yuan fei, jaan hui, tuan hua
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang jui, yang xi
kang hai » dang hai, kang han, shang hai
tan hua » tuan hua, wang hua, tan chia

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 yang ((yuan hui) OR (((tan hua) OR (than china)))) tan ((yang jin) OR (yang jie)) kang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang ((yuan hui) or (((tan hua) or (than china)))) tan ((yang jin) OR (yang jie)) kang hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang ((yuan hui) or (((tan hua) or (than china)))) tan ((yang jin) OR (yang jie)) kang hai ;*.