Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
minh trang » tinh trang, minh hoang, minh tuan
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
ca thong » ca thuong, va thong, ca trong
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap

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