Perhaps you should try some spelling variations:
china chen » china shen, china china, china chang
chen chang » chen chung, chin chang, shen chang
chang hong » change hong, zhang hong, change long
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
hong wang » hong gang, hong kong, hong jong
wang yue » wong yue, wang hua, wang yan

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 ((wang yang) OR (yang yang)) china chen chang hong wang yue ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((wang yang) or (yang yang)) china chen chang hong wang yue ;*.