Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
wang liang » wang yang
gender low » gender laws, gender labor
liang sun » liang dan, liang tan, wing sun
take back » state back, page back
sun h » sun _, sun j, sun x
saul » paul, saur, raul

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang liang sun h ((gender low) or (((gender law) or (gender class)))) take back saul ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang sun h ((gender low) OR (((gender law) OR (gender class)))) take back saul ;.
• Adding a wildcard symbol may retrieve word variants: wang liang sun h ((gender low) or (((gender law) or (gender class)))) take back saul ;*.