Perhaps you should try some spelling variations:
china's gender » child's gender, china gender, china's generic
can china's » china china's
gender role » gender roles
dong jung » hong jong, dong ping, dong yang
age sonia » age social
sonia jin » song jin, sonia ben
dong bin » dong di, dann bin
role age » role case, role de, role a

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: ((((dong bin) OR (dong sin))) OR (dong jung)) can china's gender role age sonia jin ;~.
• Adding a wildcard symbol may retrieve word variants: ((((dong bin) or (dong sin))) or (dong jung)) can china's gender role age sonia jin ;*.