Perhaps you should try some spelling variations:
young child » young children
gene based » genre based, gender based, genome based
zili gene » iii gene
aid young » david young, a young, kim young
yan yang » yang yang, yao yang, tan yang
dan yang » daun yang, tan yang, wang yang
wang » wing, wan, lang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) OR (dan yang)) zili gene based aid young child ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yang) OR (dan yang)) zili gene based aid young child ;*.