Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, phong chong
mot chieu » doi chieu, ho chieu
tranh cua » doanh cua, manh cua
dan toan » van toan, dan than, manh toan
toan tap » toan 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: ((mot chieu) OR (theo chieu)) sach - hanh tranh cua ((thong cong) OR (thong thong)) dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (theo chieu)) sach - hanh tranh cua ((thong cong) OR (thong thong)) dan toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) sach - hanh tranh cua ((thong cong) OR (thong thong)) dan toan tap*.