Perhaps you should try some spelling variations:
gene bank » gene banks, one bank, genomen bank
amin hong » min hong, among hong, asia hong
yang yao » yang yang, wang yan, yang fan
tin hong » tan hong, kia hong, thi hong
yang yi » yang di, yang xi, yang jui
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 yao) or (yang yi))) or (yang ka)) a gene bank ((amin hong) OR (tin hong)) ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((((yang yao) OR (yang yi))) OR (yang ka)) a gene bank ((amin hong) OR (tin hong)) ghi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((((yang yao) or (yang yi))) or (yang ka)) a gene bank ((amin hong) OR (tin hong)) ghi ;".
• Adding a wildcard symbol may retrieve word variants: dong ((((yang yao) or (yang yi))) or (yang ka)) a gene bank ((amin hong) OR (tin hong)) ghi ;*.