Perhaps you should try some spelling variations:
hien soat » thien hoat, kiem soat, bien soan
tinh dung » trinh dung, tinh quang, tinh huong
dung quan » dung quang, luong quan, dang quang
dieu hoat » dieu hoa, dieu hat, dien hoat
van hien » van hieu, van tien
quan va » quan vi, quan ha, luan va
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: (( tin dung luan van hien soat ) or ( tinh dung quan va dieu hoat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan van hien soat ) OR ( tinh dung quan va dieu hoat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan van hien soat ) or ( tinh dung quan va dieu hoat ))*.