Perhaps you should try some spelling variations:
yan yang » yang yang, dan yang, tan yang
yao yang » yang yang
yang jui » yang judy, yang di, yang xi
long shu » cong shu, tong shui
hua ren » hua chen
yan jiu » yang jie, yang jin, pang jiu
long du » long d, long do, long run
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan yang) or (yao yang)) hua ren ((yan jiu) or (yang jui)) ((long shu) OR (long du)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yang) OR (yao yang)) hua ren ((yan jiu) OR (yang jui)) ((long shu) OR (long du)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) or (yao yang)) hua ren ((yan jiu) or (yang jui)) ((long shu) OR (long du)) ;".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yang) or (yao yang)) hua ren ((yan jiu) or (yang jui)) ((long shu) OR (long du)) ;*.