Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh mang » nhanh mang, hanh trang, nhanh lang
van duong » van dong, van dung, van phong
ho chieu » hoc thieu, doi chieu, mot chieu
va huong » va thuong, va phuong, va tuong
cong dan » cong san, cong tan, huong dan
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (ho chieu)) sach - hanh mang ((va huong) or (van duong)) cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - hanh mang ((va huong) OR (van duong)) cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - hanh mang ((va huong) or (van duong)) cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - hanh mang ((va huong) or (van duong)) cong dan toan tap*.