Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
trong dan » trong dang, trong san, trong tan
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » tran van, hang va
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh trang va dung ((trong dan) or (cong san)) ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trang va dung ((trong dan) OR (cong san)) ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trang va dung ((trong dan) or (cong san)) ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trang va dung ((trong dan) or (cong san)) ((toan cau) OR (toan ban))*.