Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tung » thanh cong
thong cong » trong cong, thong thong, phong chong
tong cong » trong cong, cong cong, dung cong
tung cua » trung cua, tuong cua, dung cua
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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