Perhaps you should try some spelling variations:
hieu vien » hieu hien, thieu nien, hieu tieng
hieu viec » nhieu viec, hieu ve, sieu viet
cua triet » cua viet, su triet, va triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
coc tuc » coc luc, hoc thuc, doc thuc
va hanh » van hanh, va thanh, va danh
hanh ca » hanh cac, hanh cat, hanh cua
tuc va » thuc va, truc va, tuc xa
ca cua » co cua

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

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