Perhaps you should try some spelling variations:
wang yuan » wang yuhan, wang yan, fang yuan
wang xuan » wang xiuyan, wang xueman, wang yuhan
hong than » hong tan, long thanh
wang run » wang jun, wang chun, long run
dan yang » daun yang, tan yang, wang yang
yang lin » yang jin, wang lin, yang li
hong hai » shang hai, zhong tai, hong tan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuan ((wang run) OR (wang xuan)) dan yang lin ((((hong hai) or (dang hai))) or (hong than)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuan ((wang run) OR (wang xuan)) dan yang lin ((((hong hai) OR (dang hai))) OR (hong than)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuan ((wang run) OR (wang xuan)) dan yang lin ((((hong hai) or (dang hai))) or (hong than)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yuan ((wang run) OR (wang xuan)) dan yang lin ((((hong hai) or (dang hai))) or (hong than)) ;*.