Perhaps you should try some spelling variations:
david young » david loundy
aid young » kim young, all young, apc young
gene bank » gene banks, one bank, genomen bank
lang yan » wang yan, wang yang, zhang yan
yang hy5 » yang yi, yang hui
a young » _ young
yang y » yang yi, yang _, yang 8

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 hy5) OR (yang y)) gene bank ((((aid young) OR (david young))) OR (a young)) ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan ((yang hy5) or (yang y)) gene bank ((((aid young) OR (david young))) or (a young)) ghi ;~".
• Adding a wildcard symbol may retrieve word variants: lang yan ((yang hy5) or (yang y)) gene bank ((((aid young) OR (david young))) or (a young)) ghi ;*.