Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh trang » thanh trung, canh tranh, hanh trinh
ho chieu » hoc thieu, doi chieu, mot chieu
kha nang » phap nang, ky nang, ki nang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
da nang » cam nang, cao nang

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: ((theo chieu) OR (ho chieu)) sach - hanh trang ((da nang) OR (kha nang)) cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - hanh trang ((da nang) or (kha nang)) cong dan toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - hanh trang ((da nang) or (kha nang)) cong dan toan ban*.