Perhaps you should try some spelling variations:
su triet » su viet, su tien
chat xuc » chat huu, cam xuc, chao xu
ve triet » va trien
van hanh » van thanh, ban hanh, van anh
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hieu ca » hieu cac, hieu cua, hieu xa
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang

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

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