Perhaps you should try some spelling variations:
genome based » gender based, home based
danish young » dairy young, danish out, david young
game based » home based
ying yang » yin yang, ying chang, wang yang
yang yang » wang yang, wang yan
young men » young women
yang jin » yang jie, yang jun, ying jin

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: ying yang yang jin ((genome based) OR (((game based) OR (case based)))) danish young men ;~.
• Adding a wildcard symbol may retrieve word variants: ying yang yang jin ((genome based) or (((game based) or (case based)))) danish young men ;*.