Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh tri » doanh tai, doanh tren, dinh tri
vien cac » vien bach, vien dai, vien da
cao ung » cao dung, cac ung, cho ung
ung tai » dung tai, cung tai, rung tai
dan thi » dang thi, tran thi, dinh thi
te cao » te bao
de van » le van, do van, ve van

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( te cao ung tai ) or ( de van doanh tri ))) or ( vien cac dan thi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( te cao ung tai ) OR ( de van doanh tri ))) OR ( vien cac dan thi )).
• Adding a wildcard symbol may retrieve word variants: (((( te cao ung tai ) or ( de van doanh tri ))) or ( vien cac dan thi ))*.