Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
cac dac » cac dan, cac dai, cac bac
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
dac va » duc va, day va, dat va
x hoi » xa hoi, o hoi, x ho

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: te sach ty nang x hoi. hieu ve cac dac va ((dinh vi) OR (dinh ket)) cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu ve cac dac va ((dinh vi) or (dinh ket)) cua tre*.