Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
money saudi » money study
class than » less than, class taiwan
than money » than one
yang jie » yang di, yang jui, yang xi
yang jin » yang jun, ying jin, shang jin
yang fan » zhang fan, yang dean, yang yang

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