Perhaps you should try some spelling variations:
dung thuong » dung trong, hang thuong, cong thuong
chieu sach » chinh sach, chiet tach, chieu sang
dung luong » dung phuong, dung truong, dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trinh ve » trinh he, trinh va, trinh viet
trinh vi » trinh va, trinh viet, trinh van
tin toan » tinh toan, nin toan, trinh toan
toan cau » toan cao, toan ban, toan tap

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 - canh ((trinh ve) OR (trinh vi)) ((dung luong) or (dung thuong)) tin toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh ((trinh ve) OR (trinh vi)) ((dung luong) OR (dung thuong)) tin toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - canh ((trinh ve) OR (trinh vi)) ((dung luong) or (dung thuong)) tin toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh ((trinh ve) OR (trinh vi)) ((dung luong) or (dung thuong)) tin toan cau*.