Perhaps you should try some spelling variations:
genome based » home based
gender based » gender bias
david young » david loundy
game based » home based, case based
young ages » young age
ying yang » yin yang, ying chang, wang yang
yang yang » wang yang, wang yan
yang july » yang judy, yang jui, yang jun

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

• Performing a fuzzy search may retrieve terms with similar spellings: ying yang yang july ((((genome based) or (gender based))) or (game based)) david young ages ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ying yang yang july ((((genome based) OR (gender based))) OR (game based)) david young ages ;.
• Adding a wildcard symbol may retrieve word variants: ying yang yang july ((((genome based) or (gender based))) or (game based)) david young ages ;*.