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 tan » cong tac, cong san, cong thanh
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 tan) or (cong dong))) or (huong dan)) than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ban cua nhung ((((cong tan) OR (cong dong))) OR (huong dan)) than tap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ban cua nhung ((((cong tan) or (cong dong))) or (huong dan)) than tap*.