Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
canh doanh » hanh doanh, chinh doanh, kinh doanh
khong tung » khong dung, khong xuong, chong trung
cua khong » hua khong, cua phuong, cua thuong
theo cuu » theo chu, khao cuu, thao cua
tung dan » dung dan, huong dan, trung dai
dan van » dang van, doan van, dao van

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo cuu tinh - ((canh doanh) OR (doanh doanh)) cua khong tung dan van ban~".
• Adding a wildcard symbol may retrieve word variants: theo cuu tinh - ((canh doanh) OR (doanh doanh)) cua khong tung dan van ban*.