Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
zum gender » um gender, zum ende
class than » less than, class taiwan
money all » money small, money a, money really
yang jan » yang fan, yang jin, yang jun
ying jin » yang jin, jing ji, yang jie
money el » money _, money a, money 4

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: yang ((yang jan) OR (ying jin)) zum gender class than ((money all) OR (money el)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((yang jan) or (ying jin)) zum gender class than ((money all) OR (money el)) ;~".
• Adding a wildcard symbol may retrieve word variants: yang ((yang jan) or (ying jin)) zum gender class than ((money all) OR (money el)) ;*.