Perhaps you should try some spelling variations:
china chang » china zhang, china changqi, china china
chin chang » chain change, china zhang, colin chang
yan clan » das clan, yan guan
yan yuan » yan guan, fang yuan, nan yan
ha hong » ha huong, a hong, ma hong
hong yu » wong yue
wang » wing, wan, lang

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 ((yan clan) OR (yan yuan)) hua ((chin chang) OR (china chang)) ha hong yu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan clan) or (yan yuan)) hua ((chin chang) OR (china chang)) ha hong yu ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan clan) or (yan yuan)) hua ((chin chang) OR (china chang)) ha hong yu ;*.