Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tieu xanh » tieu danh, chieu xanh, dieu hanh
dieu danh » dieu hanh, tieu danh, dia danh
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua thuong, cua khong, cua tong
tang cua » mang cua, hang cua, tang luan
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) or (dieu danh)) - hanh tang cua thong ((cong tan) OR (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (dieu danh)) - hanh tang cua thong ((cong tan) OR (cong thanh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) or (dieu danh)) - hanh tang cua thong ((cong tan) OR (cong thanh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (dieu danh)) - hanh tang cua thong ((cong tan) OR (cong thanh)) toan cau*.