Perhaps you should try some spelling variations:
sach kem » hanh kem
hieu van » hieu va, thien van, lieu va
van cau » van dau, van hau, van chat
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
ac va » tac va, bac va, mac va

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: so ((sach kem) OR (sach ty)) lang xa hoi. hieu van cau ((ac va) OR (tuc va)) hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: so ((sach kem) or (sach ty)) lang xa hoi. hieu van cau ((ac va) or (tuc va)) hanh vi cua tre*.