Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh dung » thanh dung, anh dung, hanh dong
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
chu xanh » chu manh, chua xang, chuc danh
dung cua » dung luan, dung cho
tap toan » tap doan, tap quan, bai 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 ((chu xanh) or (chieu xanh)) - hanh dung cua ((hang cong) or (dung cong)) tap toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chieu xanh)) - hanh dung cua ((hang cong) OR (dung cong)) tap toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chieu xanh)) - hanh dung cua ((hang cong) or (dung cong)) tap toan tap*.