Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, nhanh thang
hanh tung » thanh tung, manh tung, hanh dung
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 - ((((hanh tang) OR (hanh tung))) OR (hanh mang)) cua dung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((((hanh tang) OR (hanh tung))) or (hanh mang)) cua dung cong tac toan cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((((hanh tang) OR (hanh tung))) or (hanh mang)) cua dung cong tac toan cau*.