Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
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
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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 thanh ((than cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - thanh ((trung cao) OR (trung co)) cong cong thanh ((than cau) OR (phan 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 thanh ((than cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - thanh ((trung cao) or (trung co)) cong cong thanh ((than cau) OR (phan cau))*.