Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong quan » thong quan, duong qua
tinh dung » trinh dung, tin dung, tinh quang
hieu soat » hieu hoat, hieu luat, kiem soat
hieu suat » hieu luat, hieu qua
kien soat » kiem soat, bien soan, kien hoa
quan van » quan va, quan luan, quan doan
van kien » van tien, van hien, van chien
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 suat)) ) or ( tinh luong quan van kien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van ((hieu soat) OR (hieu suat)) ) OR ( tinh luong quan van kien soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh dung luan van ((hieu soat) OR (hieu suat)) ) or ( tinh luong quan van kien soat ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan van ((hieu soat) OR (hieu suat)) ) or ( tinh luong quan van kien soat ))*.