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 li » yang lin, yang di, yang xi
li cong » li rong, li song, jiu cong
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 li cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong nan) OR (dong cao))) OR (yang yang)) ye ((a gene) OR (a genre)) yang li 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 li cong shu ;*.