Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam tu
ban hanh » ban hang
su triet » su viet, su tien, ve triet
te sach » toc sach
hanh ve » hanh vi, hanh va, hanh kem
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang x hoi. hieu van ((nam thuc) or (nam thu)) ban hanh ve ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu van ((nam thuc) OR (nam thu)) ban hanh ve ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu van ((nam thuc) or (nam thu)) ban hanh ve ((cua triet) or (su triet))*.