Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu viec » nhieu viec, hieu ve, sieu viet
tai nuoc » thi nuoc, tham nuoc, thay nuoc
tai quoc » mai quoc, thi quoc, tri quoc
van dinh » van minh, van dich, va dinh
dinh moi » dinh so, dinh tri, dinh thi
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
moi cua » hoi cua, doi cua, moi quan

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 lang xa hoi. hieu viec ((tai nuoc) OR (tai quoc)) van dinh moi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky lang xa hoi. hieu viec ((tai nuoc) OR (tai quoc)) van dinh moi cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky lang xa hoi. hieu viec ((tai nuoc) OR (tai quoc)) van dinh moi cua triet*.