Perhaps you should try some spelling variations:
hieu cua » hieu qua, dieu cua, bieu cua
truc van » truc va, thuc van, truc ban
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty mang » ty xang, ty hang, tin mang
mang xa » lang xa, mang may, dang xay
tuc van » thuc van, tuc va, duc van
vi cua » vai cua, di cua
cua te » cua tu

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty mang xa hoi. hieu cua cac ((tuc van) OR (truc van)) hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ty mang xa hoi. hieu cua cac ((tuc van) OR (truc van)) hanh vi cua te*.