Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
cua nhung » va nhung
hanh ban » thanh ban, hang ban, hanh san
cong dan » cong san, cong tan, cong dong
than tap » toan tap, han tap, phan tap
ban cua » ban quan

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 ban cua nhung ((cong dan) OR (huong dan)) than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ban cua nhung ((cong dan) OR (huong dan)) than tap".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ban cua nhung ((cong dan) OR (huong dan)) than tap*.