Perhaps you should try some spelling variations:
gender based » gender bias
yang zhang » yan zhang, zhang zhang, tang zheng
iii gender » ii gender, i gender, iii gene
yang yang » wang yang, wang yan
based do » based dm, based non, based dna
hong ghi » zhong zhi, hong g, hong hai
choi » chi, cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang zhang) OR (yang yang)) iii gender based do ((hong ghi) or (young choi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang zhang) OR (yang yang)) iii gender based do ((hong ghi) OR (young choi)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang zhang) OR (yang yang)) iii gender based do ((hong ghi) or (young choi)) ;*".