Perhaps you should try some spelling variations:
aid young » david young, kim young, all young
gene bank » gene banks, one bank, genomen bank
lang yan » wang yan, wang yang, zhang yan
yan yang » yang yang, yao yang, dan yang
a young » _ young
yang i » yang di, yang xi, yang yi
i gene » _ gene, a gene, e gene

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: lang yan yang i gene bank ((aid young) OR (a young)) ghi ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan yang i gene bank ((aid young) or (a young)) ghi ;*.