Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
trung cao » truong cao, trung cap, trung co
cong cong » cong dong, trong cong, dung cong
thanh cau » thanh chau, thanh mau, thanh ca
nhanh cau » nhanh cay, thanh chau, nhanh ha
trong co » trong ca, trong cong, trong cuoc
cong tan » cong tac, cong san, cong thanh

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: theo tieu xanh - thanh ((trung cao) OR (trong co)) cong cong tan ((thanh cau) OR (nhanh cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - thanh ((trung cao) or (trong co)) cong cong tan ((thanh cau) OR (nhanh cau))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - thanh ((trung cao) or (trong co)) cong cong tan ((thanh cau) OR (nhanh cau))*.