Perhaps you should try some spelling variations:
yang yao » yang yang, yang yi, yang fan
ying hua » ming hua, wang hua, ying zhu
yan clan » das clan, yan guan, yan yuan
hong hai » shang hai, zhong tai, dang hai
hua ren » hua chen
yan fan » yang fan, yan guan, yan wang
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) OR (yang yao)) ying hua ren ((yan fan) OR (yan clan)) hong hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yan) or (yang yao)) ying hua ren ((yan fan) OR (yan clan)) hong hai ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (yang yao)) ying hua ren ((yan fan) OR (yan clan)) hong hai ;*.