Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tran » thanh trang, thanh toan, thanh tra
hanh tran » hanh trang, hanh tram, thanh trang
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than tap » toan tap, han tap, phan 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 (ho chieu)) sach - ((hanh tran) OR (thanh tran)) xay dung cong ban than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - ((hanh tran) OR (thanh tran)) xay dung cong ban than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sach - ((hanh tran) OR (thanh tran)) xay dung cong ban than tap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sach - ((hanh tran) OR (thanh tran)) xay dung cong ban than tap*.