Perhaps you should try some spelling variations:
david young » david loundy
study gene » study gender, study genetic, study agency
bank david » black david, mark david, bank ravi
yang yang » wang yang, wang yan
gene bank » gene banks, one bank, genomen bank
yan yang » yao yang, dan yang, tan yang
choi » chi, cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wing or wan) ((yan yang) or (yang yang)) study gene bank david young choi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wing OR wan) ((yan yang) OR (yang yang)) study gene bank david young choi ;.
• Adding a wildcard symbol may retrieve word variants: (wing or wan) ((yan yang) or (yang yang)) study gene bank david young choi ;*.