Perhaps you should try some spelling variations:
gene yang » gene bank
yang jing » wang jing, yang jin, huang jing
jing hong » hong hong, tin hong, eng hong
yang fan » zhang fan, yang dean, yang yang
hong hai » shang hai, zhong tai, dang hai
yang yi » yang di, yang xi, yang jui
yang ka » yang yao
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 yi) or (((yang ka) OR (yang fan)))) a gene yang jing hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((yang yi) OR (((yang ka) OR (yang fan)))) a gene yang jing hong hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((yang yi) or (((yang ka) OR (yang fan)))) a gene yang jing hong hai ;".
• Adding a wildcard symbol may retrieve word variants: dong ((yang yi) or (((yang ka) OR (yang fan)))) a gene yang jing hong hai ;*.