Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
cua truong » cua trung, xuan truong, cac truong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan

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