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

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wan) dan yang zili gene based aid young child ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or wan) dan yang zili gene based aid young child ;*.