Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
trung cao » truong cao, trung cap, trung ca
cong cong » cong dong, trong cong, dung cong
trung co » trung bo, trong co, truong cao
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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

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