Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cua triet » cua viet, su triet, va triet
vien cac » vien bach, vien dai, vien da
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, dua tren
te cac » tu cac, ve cac, te cao
luc va » duc va, tuc va
loc va » hoc va
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 cac ky nang x hoi. hieu vien cac ((luc va) or (loc va)) hanh di ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky nang x hoi. hieu vien cac ((luc va) OR (loc va)) hanh di ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky nang x hoi. hieu vien cac ((luc va) or (loc va)) hanh di ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te cac ky nang x hoi. hieu vien cac ((luc va) or (loc va)) hanh di ((cua tre) OR (cua triet))*.