Perhaps you should try some spelling variations:
ve triet » va trien
van chat » cao chat
su triet » su viet, su tien
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
van cau » van dau, van hau, toan cau
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
nang co » nang cao, nang doc, nang noi
tu sach » thu sach, su sach, te sach
co loi » co hoi

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: tu sach ky nang co loi. hieu ((van cau) OR (van chat)) xuc van hanh dai ((su triet) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang co loi. hieu ((van cau) or (van chat)) xuc van hanh dai ((su triet) OR (ve triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang co loi. hieu ((van cau) or (van chat)) xuc van hanh dai ((su triet) OR (ve triet))*.