Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
luat duoc » luat tuc
lam duoc » nam duoc, lam thuoc, tao duoc
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
sach vu » sach va, sach tu, sach uu
lam xuc » cam xuc
cao hoi » cau hoi, co hoi, cao hoc
vu nang » vuc nang, va nang, vu dang
vi cuu » vi luu, vinh cuu

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 vu nang cao hoi. hieu van ((lam xuc) or (((lam duoc) or (luat duoc)))) ban thanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu nang cao hoi. hieu van ((lam xuc) OR (((lam duoc) OR (luat duoc)))) ban thanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach vu nang cao hoi. hieu van ((lam xuc) or (((lam duoc) or (luat duoc)))) ban thanh vi cuu tre*.