Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hien xanh » hien hanh, hien nhanh, chieu xanh
tran toan » tranh toan, tran tuan, tran tan
toan tong » toan thong, toan trong, toan cong
cong tran » cong tan, cong toan, cong tren
cong tuan » cong tan, cong luan, cong thanh
thanh cac » hanh cac, thanh bac, thanh ca

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 hien xanh - thanh tran toan tong ((cong tran) OR (cong tuan)) thanh cac~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh tran toan tong ((cong tran) OR (cong tuan)) thanh cac*.