Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (hieu lang)) - hanh tang ((cua dung) or (su dung)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (hieu lang)) - hanh tang ((cua dung) OR (su dung)) cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (hieu lang)) - hanh tang ((cua dung) or (su dung)) cong tac toan tap*.