Perhaps you should try some spelling variations:
dinh thong » dinh thuong, dinh hong, dinh trong
tinh dung » trinh dung, tin dung, tinh quang
hieu suat » hieu luat, hieu qua
quan tran » quang tran, quan tren, xuan tran
tran kiem » toan kiem, trang kien, trinh kiem
kiem soat » kiem toan
van hieu » cao hieu
luan » lan

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: (( tinh dung luan van hieu suat ) OR ( dinh thong quan tran kiem soat ))~.
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan van hieu suat ) or ( dinh thong quan tran kiem soat ))*.