Perhaps you should try some spelling variations:
gene yang » gene bank
yang jing » wang jing, yang jin, huang jing
yang fan » zhang fan, yang dean, yang yang
hong hai » shang hai, zhong tai, dang hai
chang ha » chang mae
yang xi » yang di, yang yi, yang jui
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 xi) or (yang fan)) a gene yang jing ((hong hai) or (chang ha)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((yang xi) OR (yang fan)) a gene yang jing ((hong hai) OR (chang ha)) ;.
• Adding a wildcard symbol may retrieve word variants: dong ((yang xi) or (yang fan)) a gene yang jing ((hong hai) or (chang ha)) ;*.