Perhaps you should try some spelling variations:
gene yang » gene bank
jin chang » chin chang, joon chang, ying chang
yang hua » wang hua, yang hui, ying hua
wang hui » wang hua, wang zhi, wang wei
yang jin » yang jie, yang jun, ying jin
chang ha » chang mae
wan yan » wang yan, nan yan, wai yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan ((yang hua) or (wang hui)) gene yang jin chang ha ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan ((yang hua) OR (wang hui)) gene yang jin chang ha ;.
• Adding a wildcard symbol may retrieve word variants: wan yan ((yang hua) or (wang hui)) gene yang jin chang ha ;*.