Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
gender cops » gender codes
wang yang » wang yan, wang liang, wang yanling
yang dan » yang dean, yang fan, wang dan
mali der » mari der, modi der, aji der
dan 1 » day 1, dan z, ban 1
spur » sur

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 dan 1 ((gender class) OR (gender cops)) mali der spur ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang dan 1 ((gender class) or (gender cops)) mali der spur ;*.