Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
duoc ban » duc ban, quoc ban, buoc ban
thanh ve » hanh ve, thanh va, thanh vien
tu sach » thu sach, su sach, te sach
tang xa » trang xa, tang ma, lang xa
van lam » van nam
cua tre » cua te, cuu tre, cua triet
y tang » ky tang, 6 tang, 7 tang
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y tang xa hoi. hieu van lam duoc ban thanh ve cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach y tang xa hoi. hieu van lam duoc ban thanh ve cua tre*.