Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
thong cong » tong cong, thong thong, phong chong
thanh tra » thanh toan, thanh hoa
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap
tra van » tran van, ta van, trang 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 xanh)) - thanh tra van ((thong cong) or (trong cong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - thanh tra van ((thong cong) OR (trong cong)) dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu xanh)) - thanh tra van ((thong cong) or (trong cong)) dan than cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu xanh)) - thanh tra van ((thong cong) or (trong cong)) dan than cao*.