Perhaps you should try some spelling variations:
qua thai » qua hai, qua khai, qua tai
thai hoc » dai hoc, bai hoc, hoi hoc
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, he cac
de cac » den cac, ve cac, de cai
te cao » te bao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((te cac) OR (de cac))) OR (te cao)) ky lang xa hoi. hieu qua thai hoc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((te cac) OR (de cac))) OR (te cao)) ky lang xa hoi. hieu qua thai hoc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((te cac) OR (de cac))) OR (te cao)) ky lang xa hoi. hieu qua thai hoc va hanh vi cua tre*.