Perhaps you should try some spelling variations:
china wang » china yang, china chang, china zhang
yang yang » wang yang, wang yan
chang ann » chang min, chang won, chang yun
min hong » amin hong, tin hong, min hyoung
yi gang » ii gang, i gang, li gang
xu gong » wu gong
xu gang » yu gang, zum gang, liu gang

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: ((((yang yang) OR (china wang))) OR (yi gang)) chang ann ((xu gong) OR (xu gang)) min hong w ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yang yang) or (china wang))) or (yi gang)) chang ann ((xu gong) OR (xu gang)) min hong w ;~".
• Adding a wildcard symbol may retrieve word variants: ((((yang yang) or (china wang))) or (yi gang)) chang ann ((xu gong) OR (xu gang)) min hong w ;*.