Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh toan » tinh toan, thanh toan, trinh quan
nhan mang » nhanh mang, nhan dang, nhan lang
trinh han » trinh quan
ho chieu » theo chieu, hoc thieu, doi chieu
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban

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