Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
bang cong » dang cong, bang song, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
nhan cua » nhat cua, nhan luc, nhan su
cua bang » chua bang, cua ban, cua dang
cong dan » cong san, cong tan, huong dan
thi bao » thi hao, thi ba, tai bao
thi hai » thi mai, thi hanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - doanh nhan cua bang cong dan ((thi bao) or (thi hai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - doanh nhan cua bang cong dan ((thi bao) OR (thi hai)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - doanh nhan cua bang cong dan ((thi bao) or (thi hai))*.