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
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
than cao » thai cao, than cap, than sao
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 hang) or (hang hang)) cua ban cong dan ((than cao) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh hang) OR (hang hang)) cua ban cong dan ((than cao) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh hang) or (hang hang)) cua ban cong dan ((than cao) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh hang) or (hang hang)) cua ban cong dan ((than cao) OR (toan cao))*.