Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong thanh, cong ha
cong san » cong tac
toan cau » toan cao, toan ban, toan tap
tinh va » tich va, trinh van, trinh vat

You may be able to get more results by adjusting your search query.

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