Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
ve triet » su triet
va trien » va truyen, va thiet, va tuyen
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di

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 ky lang xa hoi. hieu qua cac nuoc va danh vi ((ve triet) OR (va trien))~.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu qua cac nuoc va danh vi ((ve triet) or (va trien))*.