Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc 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
hieu va » lieu va, hieu qua
tuc van » thuc van, truc van, duc van
tuc va » thuc va, truc va, tuc xa
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: "toc sach ty mang xa hoi. hieu va cac ((tuc van) OR (tuc va)) hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: toc sach ty mang xa hoi. hieu va cac ((tuc van) OR (tuc va)) hanh vi cua te*.