Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh doanh » hang doanh, chinh doanh, doanh doanh
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
nong san » dong san, trong san, nang sang
cong san » cong tac
nong dan » cong dan, nguong dan, huong dan
tran van » luan van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh doanh cua cong ((((nong san) OR (cong san))) OR (nong dan)) tran van~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh doanh cua cong ((((nong san) or (cong san))) or (nong dan)) tran van*.