Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cam » trung tam, trung nam, trung ca
trung cap » truong cao, trung tam
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
khan dam » thanh dam, chang dam, khanh nam

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 ((trung cam) OR (trung cap)) nhung cong dan ((than cau) or (khan dam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thanh ((trung cam) OR (trung cap)) nhung cong dan ((than cau) OR (khan dam)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - thanh ((trung cam) OR (trung cap)) nhung cong dan ((than cau) or (khan dam))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh ((trung cam) OR (trung cap)) nhung cong dan ((than cau) or (khan dam))*.