Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien dai » hien dai
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
dai tuc » dai thuc, dai truc, dao tuc
va hanh » van hanh, va thanh, va danh
hanh vu » hanh vi, hanh va, hanh tu
su cac » tu cac, su can, eu cac
su cao » cu cao, vu cao, su co
tuc va » thuc va, truc va, tuc xa
vu va » vu van, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cac) or (su cao)) ky nang xa hoi. hieu vien dai tuc va hanh vu va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su cao)) ky nang xa hoi. hieu vien dai tuc va hanh vu va triet.
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (su cao)) ky nang xa hoi. hieu vien dai tuc va hanh vu va triet*.