Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
thanh money » ghana money
than money » than one
yang yang » wang yang, wang yan
yang jie » yang jin, yang di, yang jui
o gender » do gender, go gender, 2 gender
jie o » die o

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang jie o gender class ((thanh money) OR (than money)) small ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang yang jie o gender class ((thanh money) OR (than money)) small ;*".