Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
ve triet » va trien
su triet » su viet, su tien
vu sach » vu bach, su sach, vu khach
cac toc » cac toi, cac nuoc, cac thoi
toc van » hoc van, toc san, tac van
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: vu sach y nang x hoi. hieu vien cac toc van hanh vi ((ve triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang x hoi. hieu vien cac toc van hanh vi ((ve triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: vu sach y nang x hoi. hieu vien cac toc van hanh vi ((ve triet) or (su triet))*.