Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh trinh » canh tranh, hanh chinh
trinh phan » trinh han, trinh quan, thanh phan
ltinh toan » trinh toan, tinh than, hinh toan
ho chieu » hoc thieu, mot chieu, doi chieu
phan han » phan hoan, phan phan, phan than

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