Perhaps you should try some spelling variations:
quang toan » quang tuan, quang tran, quang doan
dung quang » dang quang, dung quan, luong quang
kien soat » kiem soat, kien hoa, kiem sat
dien hoat » dien hoa, dien hat, trien hoat
toan bien » toan tien, toan dien, tan bien
bien soan » bien so
tin » tinh
luan » quan, 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: (( tin dung luan van ((kien soat) OR (dien hoat)) ) OR ( trinh dung quang toan bien soan ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung luan van ((kien soat) OR (dien hoat)) ) or ( trinh dung quang toan bien soan ))~".
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan van ((kien soat) OR (dien hoat)) ) or ( trinh dung quang toan bien soan ))*.