Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
cong thanh » dong thanh, cong trinh, truong thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
tran toan » tranh toan, tran tuan, tran doan
tran tan » tran tuan, tran van, tran thanh
cong tan » cong tac, cong san, cong ty
than cap » khan cap, thanh lap, thanh cac

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