Perhaps you should try some spelling variations:
thanh tranh » thanh thanh, thanh tran, thanh trang
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
tranh toan » thanh toan, trinh toan, tinh toan
toan cong » tran cong, toan thong, doan cuong
cong cong » cong dong, trong cong, dung cong
cong tan » cong tac, cong san, cong thanh
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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