Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene yang » gene bank
dong bin » dong sin, dong di, dann bin
dong cao » dong xiao, dan cao, dong nan
li cong » li song, jiu cong
li rong » yi rong, li song, shi rong
a gene » a genre, a gender, a gentle
ye a » yet a, e a, me a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((dong bin) or (dong cao))) or (yang yang)) ye a gene yang ((li cong) OR (li rong)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong bin) OR (dong cao))) OR (yang yang)) ye a gene yang ((li cong) OR (li rong)) shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong bin) or (dong cao))) or (yang yang)) ye a gene yang ((li cong) OR (li rong)) shu ;".
• Adding a wildcard symbol may retrieve word variants: ((((dong bin) or (dong cao))) or (yang yang)) ye a gene yang ((li cong) OR (li rong)) shu ;*.