Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
cua thuong » cua truong, cua phuong, cua huong
hoc chieu » hoc thieu, ho chieu, hoc hien
ca thuong » cao thuong, va thuong, cp thuong
cong tan » cong tac, cong san, cong thanh
khan cap » khan ap, than cap, khoan cam
toan tap » toan 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 thuong) OR (ca thuong)) cong tan ((khan cap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh ((cua thuong) OR (ca thuong)) cong tan ((khan cap) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh trinh ((cua thuong) OR (ca thuong)) cong tan ((khan cap) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh ((cua thuong) OR (ca thuong)) cong tan ((khan cap) or (toan tap))*.