Perhaps you should try some spelling variations:
young child » young children
david young » david loundy
bank david » black david, mark david, bank ravi
gene bank » gene banks, one bank, genomen bank
yang jun » yang jui, yang jin, yang judy
pang jun » yang jui
yang xi » yang di, yang yi, yang jui
wang » wing, wan, lang

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

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