Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh dung » thanh duong, thanh tung, thanh hung
trinh toan » tinh toan, thanh toan, trinh quan
luan bang » luan nang, luan ban, luan tang
bang song » nang song
trinh han » trinh quan
ho chieu » hoc thieu, doi chieu, mot chieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (ho chieu)) sach - thanh dung luan bang song ((trinh toan) OR (trinh han)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - thanh dung luan bang song ((trinh toan) OR (trinh han)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sach - thanh dung luan bang song ((trinh toan) OR (trinh han)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sach - thanh dung luan bang song ((trinh toan) OR (trinh han)) cau*.