Perhaps you should try some spelling variations:
gene yang » gene bank
zhong zhi » zhang zhi, hong ghi, zhong tai
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
yuan zi » yan zi, yuan li, yuan fei
yan yi » yang yi, tan yi, yan zi
wang » wing, wan, lang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yi) OR (yuan zi)) hua gene yang jin ((hong w) OR (zhong zhi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yan yi) or (yuan zi)) hua gene yang jin ((hong w) or (zhong zhi)) ;*.