Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
bac tuc » bac tu, bach tuoc, bac thua
van bac » van ban, van bao, van hac
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, ban hanh

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: su sach ky nang xa hoi. hieu van bac tuc ((va hanh) OR (va danh)) lam ((cua triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van bac tuc ((va hanh) or (va danh)) lam ((cua triet) OR (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van bac tuc ((va hanh) or (va danh)) lam ((cua triet) OR (cua viet))*.