Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
class ghana » class china
ghana money » guiana money, guyana money, china money
money small » money all, money somalia, money really
yang jane » yang fan, yang jie, yang jin
yang yang » wang yang, wang yan
3 gender » 2 gender

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 ((((yang jane) OR (yang yang))) OR (hwang jane)) 3 gender class ghana money small ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((((yang jane) OR (yang yang))) or (hwang jane)) 3 gender class ghana money small ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((((yang jane) OR (yang yang))) or (hwang jane)) 3 gender class ghana money small ;*.