Perhaps you should try some spelling variations:
young child » young children
gene banks » center banks
yang dali » yang di, bang dai, yang all
gene bank » one bank, genomen bank
young chi » young choi, young hr, young kutchi
yan yang » yang yang, yao yang, dan yang
wai yan » wang yan, wei yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wai yan yang dali ((gene bank) OR (gene banks)) david ((young chi) or (young child)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wai yan yang dali ((gene bank) OR (gene banks)) david ((young chi) OR (young child)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wai yan yang dali ((gene bank) OR (gene banks)) david ((young chi) or (young child)) ;*".