Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
cua dung » cua dang, cua dong, qua dung
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than tap » toan tap, han tap, phan tap
anh ban » anh bang, anh bai, anh van
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - anh ban cua dung ((((cong dan) OR (cong tan))) or (cong san)) than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - anh ban cua dung ((((cong dan) OR (cong tan))) OR (cong san)) than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - anh ban cua dung ((((cong dan) OR (cong tan))) or (cong san)) than tap".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - anh ban cua dung ((((cong dan) OR (cong tan))) or (cong san)) than tap*.