Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
hieu viec » nhieu viec, hieu ve, sieu viet
va triet » va thiet, va trien, ve triet
dinh moi » dinh so, dinh tri, dinh thi
tai nuoc » tai quoc, thi nuoc, tham nuoc
viec tai » vien tai, lieu tai, viec lam
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va dinh » van dinh, va kinh, va tinh
bo sach » co sach, hoc sach
so sach » so sanh, co sach, hoc sach

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) OR (bo sach)) ky lang xa hoi. hieu viec tai nuoc va dinh moi ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky lang xa hoi. hieu viec tai nuoc va dinh moi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ky lang xa hoi. hieu viec tai nuoc va dinh moi ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ky lang xa hoi. hieu viec tai nuoc va dinh moi ((cua triet) or (va triet))*.