Perhaps you should try some spelling variations:
su triet » su tien, ve triet
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat xuc » chat huu, cam xuc, chao xu
so sach » so sanh, bo sach, co sach
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
nang ma » tang ma, sang ma, nang cao
sach ky » sac ky, sach y, sach ty
su viet » so viet
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang ma hoi. hieu van chat xuc ((va hanh) or (va danh)) vi ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ma hoi. hieu van chat xuc ((va hanh) OR (va danh)) vi ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ma hoi. hieu van chat xuc ((va hanh) or (va danh)) vi ((su triet) OR (su viet))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ma hoi. hieu van chat xuc ((va hanh) or (va danh)) vi ((su triet) OR (su viet))*.