Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu sang » chieu sach, chieu xanh, hieu lang
cong thang » cong thanh, cang thang, cong thong
doi chieu » doc hieu, doi chi, ho chieu
thong cua » thong quan, thong tu, huong cua
cong tang » cong lang, cong vang, cong bang
cua bang » chua bang, cua ban, cua dang
cong tan » cong tac, cong san, cong thanh

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 thong cua bang ((((cong tang) OR (cong tan))) or (cong thang)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh thong cua bang ((((cong tang) OR (cong tan))) OR (cong thang)) van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh thong cua bang ((((cong tang) OR (cong tan))) or (cong thang)) van ban*".