Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan cong » qua cong, luan cong, quan dong
cong cong » cong dong, trong cong, dung cong
cong tinh » cong trinh, cong vinh, long tinh
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 tieu)) sach - hanh trinh quan cong cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - hanh trinh quan cong cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) sach - hanh trinh quan cong cong tinh toan cao*.