Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thong cong » trong cong, tong cong, thong thong
chong cong » cong cong, cuong cong, phong cong
tranh cua » doanh cua, manh cua
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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 xanh) OR (chieu sang)) - canh tranh cua ((thong cong) or (chong cong)) tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sang)) - canh tranh cua ((thong cong) OR (chong cong)) tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu sang)) - canh tranh cua ((thong cong) or (chong cong)) tac toan ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu sang)) - canh tranh cua ((thong cong) or (chong cong)) tac toan ban*.