Perhaps you should try some spelling variations:
hanh trinh » canh tranh
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan 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) or (hoc thieu)) xanh - ((hanh trinh) or (hanh chinh)) cua bang cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (hoc thieu)) xanh - ((hanh trinh) OR (hanh chinh)) cua bang cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (hoc thieu)) xanh - ((hanh trinh) or (hanh chinh)) cua bang cong san toan tap*.