Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
dong cong » duong cong, dung cong, cong cong
dang cong » dung cong
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - ((hanh tranh) OR (hanh trinh)) cua ((dong cong) or (dang cong)) tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((hanh tranh) OR (hanh trinh)) cua ((dong cong) OR (dang cong)) tinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((hanh tranh) OR (hanh trinh)) cua ((dong cong) or (dang cong)) tinh toan ban".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((hanh tranh) OR (hanh trinh)) cua ((dong cong) or (dang cong)) tinh toan ban*.