Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
cong ban » cong bang, cong san, cong tan
ban chat » van chat, bao chat, luan chat
chat cao » chat co, chat cho, chat bao
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((cuu tinh) or (chieu xanh)) - canh doanh luan dung cong ban chat cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((cuu tinh) OR (chieu xanh)) - canh doanh luan dung cong ban chat cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((cuu tinh) or (chieu xanh)) - canh doanh luan dung cong ban chat cao*.