Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » hanh trinh, hanh trang, lanh tranh
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 chieu) or (doi chieu)) xanh - ((hanh tranh) or (canh tranh)) cua dung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) xanh - ((hanh tranh) OR (canh tranh)) cua dung cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) xanh - ((hanh tranh) or (canh tranh)) cua dung cong dan toan cao*.