Perhaps you should try some spelling variations:
young child » young children
bank david » black david, mark david, bank ravi
gene bank » gene banks, one bank, genomen bank
yang zili » yang dali
young chi » young choi, young hr, young kutchi
wai yan » wang yan, wei yang
yang li » yang lin, yang di, yang xi

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 zili) or (yang li)) gene bank david ((young chi) OR (young child)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wai yan ((yang zili) OR (yang li)) gene bank david ((young chi) OR (young child)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wai yan ((yang zili) or (yang li)) gene bank david ((young chi) OR (young child)) ;*".