Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tran thanh » ban thanh, van thanh, quan thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
tran tuan » tran xuan, tran quang, tranh luan
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - thanh ((tran tuan) OR (tran thanh)) trong cong tan phan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - thanh ((tran tuan) OR (tran thanh)) trong cong tan phan cau*.