Perhaps you should try some spelling variations:
china gain » china grain, china main, china going
gene bank » gene banks, one bank, genomen bank
many gene » many geneva, landy gene, many end
did china » did china's
yang fan » zhang fan, yang dean, yang yang
bank did » bank aid, bank die, bank cdd
yang yi » yang xi, yang jui
1 many » _ many, 1 mann, 5 many

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yang yi) OR (yang fan))) OR (yang di))nr 1 many gene bank did china gain ;~.
• Adding a wildcard symbol may retrieve word variants: ((((yang yi) or (yang fan))) or (yang di))nr 1 many gene bank did china gain ;*.