Perhaps you should try some spelling variations:
gene bank » gene banks, one bank, genomen bank
bank amin » banks amid, bank aid, bank api
yang yao » yang yang, wang yan, yang yi
hong ghi » zhong zhi, hong g
hong hai » shang hai, zhong tai, dang hai
yang ya » yang yi, yang y, yang yang
yang ka » yang fan
a gene » a genre, a gender, a gentle

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong ((((yang ya) or (yang yao))) or (yang ka)) a gene bank amin ((hong ghi) OR (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((((yang ya) OR (yang yao))) OR (yang ka)) a gene bank amin ((hong ghi) OR (hong hai)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((((yang ya) or (yang yao))) or (yang ka)) a gene bank amin ((hong ghi) OR (hong hai)) ;".
• Adding a wildcard symbol may retrieve word variants: dong ((((yang ya) or (yang yao))) or (yang ka)) a gene bank amin ((hong ghi) OR (hong hai)) ;*.