Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
thong nam » thong xay, dong nam, thong va
anh tang » anh bang, anh dang, anh sang
anh nang » ganh nang, anh bang, anh dang
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((anh tang) OR (anh nang)) cua dong ((cong tac) OR (thong nam)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((anh tang) OR (anh nang)) cua dong ((cong tac) or (thong nam)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((anh tang) OR (anh nang)) cua dong ((cong tac) or (thong nam)) toan cau*.