Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
bac tuc » bac tu, bach tuoc, bac thua
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
va dan » ca dan, va dao, va dau
sac ky » cac ky, sai ky

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