Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
sach ky » sac ky, sach y, sach kem
van dau » van dao, phan dau
lang ha » long ha
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
tuc va » thuc va, truc va, tuc xa
ac va » tac va, bac va, mac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ky) or (sach ty)) lang ha hoi. hieu van dau ((ac va) or (tuc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sach ty)) lang ha hoi. hieu van dau ((ac va) OR (tuc va)) hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) or (sach ty)) lang ha hoi. hieu van dau ((ac va) or (tuc va)) hanh vai cua tre*.