Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh hang » thanh hang, hanh han, hanh mang
hang hang » nang hang, cang thang, hung thang
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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