Perhaps you should try some spelling variations:
many gene » many geneva, landy gene, many end
gene bank » gene banks, one bank, genomen bank
bank amin » banks amid, bank aid, bank api
amin hong » min hong, among hong, tin hong
yang yi » yang xi, yang jui
yang ka » yang fan, yang yao
ng 2 » nr 2, n 2, gg 2
g 2 » g 20, gt 2
tan » than

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 ka))) OR (yang di))((ng 2) OR (g 2)) many gene bank amin hong tan ;~.
• Adding a wildcard symbol may retrieve word variants: ((((yang yi) or (yang ka))) or (yang di))((ng 2) or (g 2)) many gene bank amin hong tan ;*.