Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hoc chieu » hoc thieu, ho chieu, hoc hien
cong luan » tong luan, cong tuan, dong luan
ban thanh » ban hanh, ban hang
dan than » dan chan, ban than, van than

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - thanh cong luan chung cong ((dan than) OR (ban thanh)) tap~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - thanh cong luan chung cong ((dan than) or (ban thanh)) tap*.