Perhaps you should try some spelling variations:
quan hoang » luan hoan
hoang kiem » hoang kim, hoan kiem, toan kiem
tinh luong » tinh huong, dinh luong, tinh cuong
minh luong » dinh luong, minh tuong, minh cuong
dung quan » dung quang, dung luan, luong quan
kiem soat » kiem toan
hieu soat » hieu suat, hieu hoat, hieu luat
van hieu » cao hieu

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 quan hoang kiem soat ) OR ( ((tinh luong) OR (minh luong)) luan van hieu soat ))~.
• Adding a wildcard symbol may retrieve word variants: (( trinh dung quan hoang kiem soat ) or ( ((tinh luong) or (minh luong)) luan van hieu soat ))*.