Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach nuoc » sach duoc, cac nuoc, bach tuoc
hieu viec » nhieu viec, hieu ve, sieu viet
dinh doi » dinh moi, tinh doi, dinh toi
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
sach ky » sac ky, sach y, sach kem
va dinh » van dinh, va kinh, va tinh
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: su ((sach ky) OR (sach ty)) nang xa hoi. ((hieu viec) or (lieu va)) sach nuoc va dinh doi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach ty)) nang xa hoi. ((hieu viec) OR (lieu va)) sach nuoc va dinh doi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sach ty)) nang xa hoi. ((hieu viec) or (lieu va)) sach nuoc va dinh doi cua triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sach ty)) nang xa hoi. ((hieu viec) or (lieu va)) sach nuoc va dinh doi cua triet*.