Perhaps you should try some spelling variations:
thuong quan » thuong quang, thong quan, truong quan
minh thuong » minh tuong, dinh thuong, binh thuong
tinh dung » trinh dung, tin dung, tinh quang
hieu soat » hieu suat, hieu hoat, kiem soat
hieu luat » hieu qua
quan doi » quan tri, quan li
doi hien » doi dien, doi bien, doi kien
hien so » khien so, bien so, hieu so
luan » lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh dung luan van ((hieu soat) or (hieu luat)) ) or ( minh thuong quan doi hien so ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van ((hieu soat) OR (hieu luat)) ) OR ( minh thuong quan doi hien so )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan van ((hieu soat) or (hieu luat)) ) or ( minh thuong quan doi hien so ))*.