Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene bank » gene banks, one bank, genomen bank
dong nan » dong yang, dong bin
dong cao » dong xiao, dan cao, yong cai
hua gene » human gene, a gene, hua ren
bank jiu » bank aid, bank die
jiu cong » li cong

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 sin))) or (dong cao))) or (yang yang)) ya hua gene bank jiu cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((dong nan) OR (dong sin))) OR (dong cao))) OR (yang yang)) ya hua gene bank jiu cong shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((dong nan) OR (dong sin))) or (dong cao))) or (yang yang)) ya hua gene bank jiu cong shu ;".
• Adding a wildcard symbol may retrieve word variants: ((((((dong nan) OR (dong sin))) or (dong cao))) or (yang yang)) ya hua gene bank jiu cong shu ;*.