Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cac xuc » cam xuc, chat xuc, cac cuoc
va hanh » van hanh, va thanh, va danh
su tien » su kien, su hien, tu tieng

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: vu sach ky lang xa hoi. hieu qua ((cac xuc) OR (cac nuoc)) va hanh vi ((cua triet) OR (su tien))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang xa hoi. hieu qua ((cac xuc) OR (cac nuoc)) va hanh vi ((cua triet) or (su tien))~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang xa hoi. hieu qua ((cac xuc) OR (cac nuoc)) va hanh vi ((cua triet) or (su tien))*.