Perhaps you should try some spelling variations:
dong thuong » cong thuong, dong thong, dung thuong
chieu sach » chinh sach, chiet tach, chieu sang
thuong dan » huong dan, thuong han, thuong dam
tuan dong » tuan duong, quan dong, luan dong
ho chieu » theo chieu, hoc thieu, doi chieu
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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 - ((thanh tung) or (thanh cong)) tuan dong thuong dan ((khan cap) OR (khan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((thanh tung) OR (thanh cong)) tuan dong thuong dan ((khan cap) OR (khan ap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((thanh tung) or (thanh cong)) tuan dong thuong dan ((khan cap) OR (khan ap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((thanh tung) or (thanh cong)) tuan dong thuong dan ((khan cap) OR (khan ap))*.