Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
wang tao » wang qiao, huang tao, wang yan
tan chia » than china, can china, dan china
dan yang » daun yang, tan yang, wang yang
yang jin » yang jie, yang jun, ying jin
zong hai » hong hai, dang hai, zong he
long han » long chain, long thanh, long haul

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 tao ((tan chia) OR (tuan china)) dan yang jin ((zong hai) OR (long han)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang tao ((tan chia) OR (tuan china)) dan yang jin ((zong hai) or (long han)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang tao ((tan chia) OR (tuan china)) dan yang jin ((zong hai) or (long han)) ;*.