Perhaps you should try some spelling variations:
lam duoc » nam duoc, luat duoc, lam thuoc
va thanh » gia thanh, ban thanh, va tinh
thanh co » thanh do, thanh ca, thanh ho
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, cao hoc, tao hoi
duoc va » nuoc va, duc va, duoc ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
va lam » van lam, va lap
co cua » con cua, ca cua, cong cua

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