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 yun, change annex
chang won » chang soon, chang min, chang you
gong min » jong min, song min, gong meng
min hong » amin hong, tin hong, min hyoung
yi gang » ii gang, i gang, li gang
xu gong » wu gong, xu 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) OR (chang won)) xu gong 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) OR (chang won)) xu gong min hong w ;~".
• Adding a wildcard symbol may retrieve word variants: ((((yang yang) or (china wang))) or (yi gang)) ((chang ann) OR (chang won)) xu gong min hong w ;*.