Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
doanh khoa » toan khoa
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
chuan dao » chuan doan, chuan iso, chuan ha
khoa cua » hoa cua, kho cua, khoe cua
cua hang » cua dang, cua nhung, cua cong
cong san » cong tac
doanh » danh, toanh, soanh
doan » dan, toan, soan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - doanh khoa cua hang cong san ((chuan dao) or (chan doan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - doanh khoa cua hang cong san ((chuan dao) OR (chan doan))*.