Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo chieu » theo tieu, ho chieu, thi chieu
trinh han » trinh quan
hang cong » dang cong, bang cong, thanh cong
hang nong » thang long, han tong
theo chu » cho chu, chao chu, theo yeu
toan cao » toan ban, toan tap

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