Perhaps you should try some spelling variations:
gender biases » gender bias, gender based
gender class » gender bias
based saul » based fault, based small, based soil
wang kang » wang yang, wang liang, wang yan
kang chen » chang chen, jane chen, kang han
chen a » chen _, chen e, chen y

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang kang chen a ((gender class) OR (gender biases)) state based saul ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang kang chen a ((gender class) OR (gender biases)) state based saul ;".
• Adding a wildcard symbol may retrieve word variants: wang kang chen a ((gender class) OR (gender biases)) state based saul ;*.