Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
canh doanh » chinh doanh, doanh doanh, kinh doanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
chan tap » han tap, phan tap, toan tap
chan ta » chan tha, nhan tai, nhan tao

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 - ((canh doanh) OR (hanh doanh)) cua dung cong san ((chan tap) or (chan ta))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((canh doanh) OR (hanh doanh)) cua dung cong san ((chan tap) OR (chan ta)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((canh doanh) OR (hanh doanh)) cua dung cong san ((chan tap) or (chan ta))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((canh doanh) OR (hanh doanh)) cua dung cong san ((chan tap) or (chan ta))*.