Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, hanh trinh, minh trang
hoc chieu » hoc thieu, ho chieu, hoc hien
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
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 trang) OR (canh tranh)) cua dong cong dan ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((hanh trang) OR (canh tranh)) cua dong cong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((hanh trang) OR (canh tranh)) cua dong cong dan ((toan tap) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh trang) OR (canh tranh)) cua dong cong dan ((toan tap) or (toan ban))*.