Perhaps you should try some spelling variations:
china tan » china top, china two, china taiwan
wang nan » wang yan, wang ban, wang dan
tan yang » dan yang, tan ying, tan yong
yang lin » yang jin, wang lin, yang li
long han » long chain, long thanh, long haul
hong hai » shang hai, zhong tai, dang hai
nan can » man can, nan yan

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 nan can china tan yang lin ((long han) OR (hong hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang nan can china tan yang lin ((long han) or (hong hai)) ;*.