Perhaps you should try some spelling variations:
canh doanh » chinh doanh, doanh doanh, kinh doanh
hanh doanh » hang doanh, chinh doanh, doanh doanh
hoc dieu » hoc thieu, hoc hien
cua doan » cua doanh, cua toan, chuan doan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man
cua dan » cua dang, cua ban, ca dan

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 dieu hanh - ((canh doanh) OR (hanh doanh)) ((cua doan) OR (cua dan)) huong dan than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dieu hanh - ((canh doanh) OR (hanh doanh)) ((cua doan) or (cua dan)) huong dan than ban~".
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - ((canh doanh) OR (hanh doanh)) ((cua doan) or (cua dan)) huong dan than ban*.