Perhaps you should try some spelling variations:
luat duoc » luat tuc
lam duoc » nam duoc, lam thuoc, tao duoc
thanh ca » thanh cha, thanh cac, thanh ha
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
so sach » so sanh, bo sach, co sach
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
ma hoi » xa hoi, ma hoa, me hoi
ca cua » co cua

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 ky nang ((ma hoi) OR (mai hoi)). lieu va ((lam duoc) OR (luat duoc)) va thanh ca cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ((ma hoi) or (mai hoi)). lieu va ((lam duoc) OR (luat duoc)) va thanh ca cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((ma hoi) or (mai hoi)). lieu va ((lam duoc) OR (luat duoc)) va thanh ca cua tre*.