Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
cua dung » cua dong, qua dung, cua rung
cua dang » cua ban
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 trinh ((cua dung) or (((cua dang) OR (cua cong)))) cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh ((cua dung) OR (((cua dang) OR (cua cong)))) cong dan van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh trinh ((cua dung) or (((cua dang) OR (cua cong)))) cong dan van ban*".