Perhaps you should try some spelling variations:
tieu xanh » chieu xanh, dieu hanh, tien anh
tieu danh » dieu danh, tiep danh, thien danh
hanh tang » hanh trang, anh tang, hanh mang
dang cong » dung cong
bang cong » bang song, hang cong, dung cong
tang cua » mang cua, hang cua, tang luan
san toan » van toan, dan toan, manh toan
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 (tieu danh)) - hanh tang cua ((dang cong) or (bang cong)) san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (tieu danh)) - hanh tang cua ((dang cong) OR (bang cong)) san toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) OR (tieu danh)) - hanh tang cua ((dang cong) or (bang cong)) san toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) OR (tieu danh)) - hanh tang cua ((dang cong) or (bang cong)) san toan cau*.