Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
cong hach » cong sach, cong khanh, trong hach
mang cua » manh cua, dung cua, ban cua
cua tong » cua cong, cua dong, cua nong
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 mang cua tong ((cong hach) or (cong thanh)) ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh mang cua tong ((cong hach) OR (cong thanh)) ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh mang cua tong ((cong hach) or (cong thanh)) ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh mang cua tong ((cong hach) or (cong thanh)) ((toan tap) OR (toan ban))*.