Perhaps you should try some spelling variations:
cuong quan » luong quan, vuong quan, luong quang
minh cuong » dinh cuong, manh cuong, minh tuong
hieu soat » hieu hoat, hieu luat, kiem soat
hieu suat » hieu luat, hieu qua
lien soat » kiem soat, bien soan, lien son
tri lien » thi lien, tri lieu, tri kien
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: (( trinh dung luan van ((hieu soat) OR (hieu suat)) ) OR ( minh cuong quan tri lien soat ))~.
• Adding a wildcard symbol may retrieve word variants: (( trinh dung luan van ((hieu soat) or (hieu suat)) ) or ( minh cuong quan tri lien soat ))*.