Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
class take » class taste, class time, class base
take based » case based, game based, care based
based saul » based fault, based small, based soil
wang wang » wang yang, wang liang, wang yan
chun lan » chia lan, chun wai
chun 2 » chun _, chun h, chun i

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang ((chun 2) OR (chun lan)) gender class take based saul ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang ((chun 2) OR (chun lan)) gender class take based saul ;".
• Adding a wildcard symbol may retrieve word variants: wang wang ((chun 2) OR (chun lan)) gender class take based saul ;*.