Perhaps you should try some spelling variations:
cang thang » dang thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
cong thanh » dong thanh, cong trinh, cong tan
hieu manh » hieu nganh, dieu hanh, hien hanh
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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: hoc ((chieu xanh) or (hieu manh)) - ((cang thang) or (cong thanh)) cua bang cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hieu manh)) - ((cang thang) OR (cong thanh)) cua bang cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hieu manh)) - ((cang thang) or (cong thanh)) cua bang cong tac toan ban*.