Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hung thang » cang thang, hung tran
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh mang » nhanh mang, hanh trang, nhanh lang
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong ty
toan cau » toan cao, toan ban, toan tap

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 - ((hanh mang) or (hung thang)) cua dung ((cong tan) OR (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh mang) OR (hung thang)) cua dung ((cong tan) OR (cong thanh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh mang) or (hung thang)) cua dung ((cong tan) OR (cong thanh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh mang) or (hung thang)) cua dung ((cong tan) OR (cong thanh)) toan cau*.