Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
ho chiet » ho chieu, ho thiet, hoc thiet
hanh van » thanh van, khanh van, hanh va
van than » van thanh, van thang, van tuan
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh van ban ((nhung cong) or (hang cong)) van than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh van ban ((nhung cong) OR (hang cong)) van than cap.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh van ban ((nhung cong) or (hang cong)) van than cap*.