Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong huong » cong thuong, cong luong, cong hung
hieu manh » chieu xanh, hieu nganh, dieu hanh
minh cua » manh cua, sinh cua, tinh cua
dan than » dan chan, ban than, van than
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 ((hieu manh) or (chieu sach)) - hoang minh cua cong huong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - hoang minh cua cong huong dan than cap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - hoang minh cua cong huong dan than cap*.