Perhaps you should try some spelling variations:
dung tuong » dung thuong, dung truong, dung trong
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
doanh cua » doanh luan
manh cua » ban cua
tac toan » tam toan, hach toan, tich toan
tap toan » tap doan, tap quan, bai toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - hanh ((manh cua) or (doanh cua)) dung tuong ((tac toan) OR (tap toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh ((manh cua) OR (doanh cua)) dung tuong ((tac toan) OR (tap toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh ((manh cua) or (doanh cua)) dung tuong ((tac toan) OR (tap toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh ((manh cua) or (doanh cua)) dung tuong ((tac toan) OR (tap toan)) cau*.