Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh tu » trinh ky, trinh do
tu nhung » tu chung, cua nhung, thi nhung
cong san » cong tac
chanh tu » nhanh tu, thanh tu, chinh tu
hanh tu » anh tu, danh tu

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 tu nhung cong san ((chanh tu) or (hanh tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - hanh trinh tu nhung cong san ((chanh tu) OR (hanh tu)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) sach - hanh trinh tu nhung cong san ((chanh tu) or (hanh tu))*.