Perhaps you should try some spelling variations:
su triet » su tien, ve triet
hanh dai » hanh tai, hanh dao, vanh dai
van chat » cao chat
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cau » van dau, van hau, toan cau
su viet » so viet
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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