Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
wang kang » wang yang, wang liang, wang yong
china dan » china den, china data, china des
zhong tai » hong tan, zhong zhi
dan yang » daun yang, tan yang, wang yang
yang lin » yang jin, wang lin, yang li
hong hai » shang hai, dang hai, hong tan

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 kang) OR (wang yan)) than china dan yang lin ((hong hai) OR (zhong tai)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang kang) or (wang yan)) than china dan yang lin ((hong hai) or (zhong tai)) ;*.