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

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) OR (wang dan)) can china tan yang lin ((((long han) OR (long haul))) OR (hong hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang nan) or (wang dan)) can china tan yang lin ((((long han) OR (long haul))) or (hong hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang nan) or (wang dan)) can china tan yang lin ((((long han) OR (long haul))) or (hong hai)) ;*.