Perhaps you should try some spelling variations:
yan yang » yang yang, yao yang, dan yang
yang hua » wang hua, yang hui, ying hua
hua rene » hua ren, juan rene
ying jin » yang jin, jing ji
yang jie » yang jin, yang di, yang jui
wan yan » wang yan, nan yan, wai yan
yan jiu » yang jin, pang jiu

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

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