Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tran » hanh trang, thanh tran, hanh tram
ho chieu » hoc thieu, doi chieu, mot chieu
day dung » xay dung, duy dung, gay dung
dan dung » van dung, tin dung, ap dung
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 ((day dung) OR (dan 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 ((day dung) OR (dan 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 ((day dung) OR (dan dung)) cong ban than tap*".