Perhaps you should try some spelling variations:
thuyet minh » thuyet kinh, thuyet dinh, thuyet tinh
minh doanh » kinh doanh, minh danh, minh doan
nghiep vu » nghiep va
manh toan » thanh toan, tinh toan
nghe duoc » nghiem duoc, nghe nuoi, che duoc
duoc hoc » quoc hoi
vu hoc » tu hoc, va hoc, du hoc

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: (( thuyet minh doanh nghiep vu hoc ) OR ( tu ((manh toan) OR (anh tuan)) nghe duoc hoc ))~.
• Adding a wildcard symbol may retrieve word variants: (( thuyet minh doanh nghiep vu hoc ) or ( tu ((manh toan) or (anh tuan)) nghe duoc hoc ))*.