Perhaps you should try some spelling variations:
korean women » korean won, foreign women, urban women
women women » women men, men women, modern women
health gap » health gaps, wealth gap, health gain
yan liang » yang liang, wang liang, you liang
chang mae » chang ha, changes made
yang jin » yang jie, yang jun, ying jin

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((women women) OR (korean women)) human health gap ((yan liang) OR (yang jin)) chang mae ;~.
• Adding a wildcard symbol may retrieve word variants: ((women women) or (korean women)) human health gap ((yan liang) or (yang jin)) chang mae ;*.