Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
sach nuoc » sach duoc, bach tuoc, dich nuoc
cua triet » cua viet, su triet, va triet
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
xanh doi » xanh di, thanh doi, tinh doi
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va xanh » va danh, va hanh, va anh
doi cua » dai cua, hoi 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 viec ((sach nuoc) OR (cac nuoc)) va xanh doi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. hieu viec ((sach nuoc) OR (cac nuoc)) va xanh doi cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu viec ((sach nuoc) OR (cac nuoc)) va xanh doi cua triet*.