Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuong dan » huong dan, thuong han, thuong lan
thuong dam » thuong mai, huong dan, truong dai
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
ho chieu » theo chieu, hoc thieu, doi chieu
tinh ung » tinh dung, trinh ung, tinh hung
toan cau » toan cao, toan ban, toan tai
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: ho chieu sach - hanh tinh ung dung ((thuong dan) or (thuong dam)) ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tinh ung dung ((thuong dan) OR (thuong dam)) ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh tinh ung dung ((thuong dan) or (thuong dam)) ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tinh ung dung ((thuong dan) or (thuong dam)) ((toan cau) OR (toan tap))*.