Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
luan trong » quan trong, luat trong, luong trong
luan tuong » luan luong, luat thuong, xuan truong
trinh toan » tinh toan, thanh toan, trinh quan
hanh mang » nhanh mang, hanh trang, nhanh lang
trinh han » trinh quan
ho chieu » theo chieu, hoc thieu, doi chieu

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 mang ((luan trong) OR (luan tuong)) cong ((trinh toan) OR (trinh han)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh mang ((luan trong) OR (luan tuong)) cong ((trinh toan) or (trinh han)) ban~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh mang ((luan trong) OR (luan tuong)) cong ((trinh toan) or (trinh han)) ban*.