Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
cua tong » cua dong, cua nong, cua song
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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 tong) or (cua cong)) cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh ((cua tong) OR (cua cong)) cong san than cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh ((cua tong) or (cua cong)) cong san than cau*.