Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
va thanh » gia thanh, ban thanh, va tinh
dang xay » dang van, van xay
su triet » su tien, ve triet
viec cac » vien cac, viec cua, viec lam
so sach » so sanh, bo sach, co sach
su viet » so viet
va hanh » van hanh, va danh, ban hanh
sach ky » sac ky, sach y, sach ty
cac thu » cach thuc, cac thoi
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh

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 dang xay hoi. hieu viec cac thu ((va hanh) OR (va thanh)) va ((su triet) OR (su viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky dang xay hoi. hieu viec cac thu ((va hanh) OR (va thanh)) va ((su triet) or (su viet))~".
• Adding a wildcard symbol may retrieve word variants: so sach ky dang xay hoi. hieu viec cac thu ((va hanh) OR (va thanh)) va ((su triet) or (su viet))*.