Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
doi chieu » doc hieu, doi chi, ho chieu
hanh tran » hanh trang, thanh tran, hanh tram
dung cong » dung trong
tran xay » tra xay, tran day, trinh xay
cong tan » cong tac, cong san, cong thanh
than tap » han tap, phan tap, than cap
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 (doi chieu)) sach - hanh tran xay dung cong tan ((than tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) sach - hanh tran xay dung cong tan ((than tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) sach - hanh tran xay dung cong tan ((than tap) or (toan tap))*.