Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuong dan » huong dan, thuong han, thuong dam
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh hinh » hanh chinh, hanh tinh, hanh dinh
cua dang » cua cong
toan cau » toan cao, toan tap, toan tai
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: hoc chieu sach - hanh hinh ((cua dang) OR (cua ban)) thuong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh hinh ((cua dang) OR (cua ban)) thuong dan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh hinh ((cua dang) OR (cua ban)) thuong dan ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh hinh ((cua dang) OR (cua ban)) thuong dan ((toan cau) or (toan ban))*.