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 cap, trung ca
trung nam » trung tam, trong nam, trung cap
cong tan » cong tac, cong san, cong thanh
khan cap » khan ap, khoan cam, phan cac
than cap » thanh lap, thanh cac, than cua

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