Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
hang tai » hang va, dung tai
cua tre » cua te, cuu tre, dua tren
va tham » van tham, va cham, va thuat
su sach » vu sach
tai hoi » tai khoi, dai hoi, tai hai
ty hang » ly hang, ty xang, thi hang
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua

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: ((su sach) OR (so sach)) ty hang tai hoi. hieu va tham nuoc va thanh vi ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty hang tai hoi. hieu va tham nuoc va thanh vi ((cua tre) OR (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty hang tai hoi. hieu va tham nuoc va thanh vi ((cua tre) OR (cua triet))*.