Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
nhanh lang » nhanh quang, nhanh thang, nhanh dong
nhan dang » nhan dan, phan dang, tran dang
tong cong » trong cong, cong cong, dung cong
cong dan » cong san, cong tan, huong dan
va tong » va thong, va tuong, va trong
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) OR (chieu sach)) - ((nhanh lang) or (nhan dang)) va tong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - ((nhanh lang) OR (nhan dang)) va tong cong dan van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - ((nhanh lang) or (nhan dang)) va tong cong dan van ban*".