Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tinh » thanh binh, nhanh tinh, than kinh
ngung cong » dung cong, nganh cong, nguoi cong
nhung cong » dung cong, thong cong, hang cong
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
chat » nhat, phat

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 xanh) OR (chieu sach)) - thanh tinh chat ((ngung cong) or (nhung cong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - thanh tinh chat ((ngung cong) OR (nhung cong)) tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sach)) - thanh tinh chat ((ngung cong) or (nhung cong)) tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sach)) - thanh tinh chat ((ngung cong) or (nhung cong)) tac toan tap*.