Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
thang va » hang va, trang va, thong va
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
va dung » van dung, va duong, vat 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 thang va dung ((cong dan) or (cong tan)) ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh thang va dung ((cong dan) OR (cong tan)) ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh thang va dung ((cong dan) or (cong tan)) ((toan ban) or (van ban))*.