Perhaps you should try some spelling variations:
care child » calle child, cause child, age child
can child » can build, can china, cbt child
long tin » long tip, long trinh, long time
wen ping » chen ping, kwek ping, when pins
ping jia » jing jia, jing ji, ying jin
tong hui » wang hui
gong si » dong sin

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: long tin ((can child) OR (care child)) wen ping jia ((tong hui) OR (gong si)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long tin ((can child) OR (care child)) wen ping jia ((tong hui) or (gong si)) ;~".
• Adding a wildcard symbol may retrieve word variants: long tin ((can child) OR (care child)) wen ping jia ((tong hui) or (gong si)) ;*.