Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh trinh » canh tranh, hanh chinh
trinh quen » trinh quan, trinh tuyen, trinh luyen
quen chong » quyen cong, huyen chuong
chong cong » cong cong, thong cong, cuong cong
ho chieu » hoc thieu, doi chieu, mot chieu
cong dan » cong san, cong tan, huong dan
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: ((theo chieu) OR (ho chieu)) sach - hanh trinh quen chong cong dan ((toan tap) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - hanh trinh quen chong cong dan ((toan tap) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - hanh trinh quen chong cong dan ((toan tap) or (van ban))*.