Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tran » hanh trang, thanh tran, hanh tram
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
tran xay » tra xay, tran day, trinh xay
tan than » tan thanh, tan tran, tam than
ban than » ban thanh, van thanh, ban hang

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 xay dung cong ((tan than) OR (ban than)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - hanh tran xay dung cong ((tan than) OR (ban than)) tap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - hanh tran xay dung cong ((tan than) OR (ban than)) tap*.