Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
tung cua » trung cua, tuong cua, dung cua
cong dan » cong san, cong tan, huong dan
chan ban » can ban, chan nan, chan doan
chat ban » nhat ban, chat ran, cua 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 - thanh tung cua thong cong dan ((chan ban) or (chat ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thanh tung cua thong cong dan ((chan ban) OR (chat ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh tung cua thong cong dan ((chan ban) or (chat ban))*.