Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
cong dan » cong san, huong dan, cong dong
dan dung » van dung, tin dung
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap
ap dung » xay dung, van dung

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 sang - thanh cong ((dan dung) or (ap dung)) ((cong dan) OR (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh cong ((dan dung) OR (ap dung)) ((cong dan) OR (cong tan)) toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh cong ((dan dung) or (ap dung)) ((cong dan) OR (cong tan)) toan cau*".