Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cua » manh cua
doanh cua » doanh luan
dung cong » dung trong
hach toan » thanh toan, manh 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 ((tranh cua) OR (doanh cua)) dung cong ((tap toan) or (hach toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh ((tranh cua) OR (doanh cua)) dung cong ((tap toan) OR (hach toan)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh ((tranh cua) OR (doanh cua)) dung cong ((tap toan) or (hach toan)) cao*".