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 thong » cua thuong, cua khong, cua tong
hua khong » hoa khong, cua khong, hoac khong
thanh ban » thanh san, thanh van, thanh bac
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 trinh ((cua thong) or (hua khong)) cong dan ((thanh ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh ((cua thong) OR (hua khong)) cong dan ((thanh ban) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh ((cua thong) or (hua khong)) cong dan ((thanh ban) or (toan ban))*.