Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
qua ca » qua cac, qua cua, qua cai
ca xuc » cam xuc, chat xuc
anh vi » hanh vi, anh va, anh vu
anh ve » hanh ve, anh va, anh viet

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu qua ca xuc van ((anh vi) or (anh ve)) ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu qua ca xuc van ((anh vi) OR (anh ve)) ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu qua ca xuc van ((anh vi) or (anh ve)) ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu qua ca xuc van ((anh vi) or (anh ve)) ((cua tre) OR (cuu tre))*.