Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
dinh toan » tinh toan, minh toan, dinh than
hinh toan » tinh toan, thanh toan, trinh toan
ho chieu » hoc thieu, doi chieu, mot chieu
cua bang » chua bang, cua ban, cua dang

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 - hanh trung cua bang phuong ((dinh toan) OR (hinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - hanh trung cua bang phuong ((dinh toan) OR (hinh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sach - hanh trung cua bang phuong ((dinh toan) OR (hinh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sach - hanh trung cua bang phuong ((dinh toan) OR (hinh toan)) cau*.