Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
dong nan » dong yang, dong sin, dong bin
dong cao » dong xiao, dan cao, yong cai
a genre » _ genre, a gender, a gentle
yang xi » yang di, yang yi, yang jui
xi cong » li cong, jiu cong, xi cheng
a gene » a gender, a gentle, a geneve

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((dong nan) or (dong cao))) or (yang yang)) ye ((a gene) or (a genre)) yang xi cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong nan) OR (dong cao))) OR (yang yang)) ye ((a gene) OR (a genre)) yang xi cong shu ;.
• Adding a wildcard symbol may retrieve word variants: ((((dong nan) or (dong cao))) or (yang yang)) ye ((a gene) or (a genre)) yang xi cong shu ;*.