Perhaps you should try some spelling variations:
ban thanh » ban hang
luat duoc » luat tuc
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
lam xuc » cam xuc, lam duoc
sang ma » tang ma, nang ma, sang tao
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y sang ma hoi. hieu van ((lam xuc) or (luat duoc)) ((ban thanh) OR (ban hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y sang ma hoi. hieu van ((lam xuc) OR (luat duoc)) ((ban thanh) OR (ban hanh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y sang ma hoi. hieu van ((lam xuc) or (luat duoc)) ((ban thanh) OR (ban hanh)) vi cua tre*".