Perhaps you should try some spelling variations:
quang toan » quang tuan, quang tran, quang doan
tinh dung » trinh dung, tin dung, tinh quang
hieu luat » hieu qua
dinh dang » binh dang, dinh lang, dinh rang
dinh dung » dinh duong, dinh hung, trinh dung
tien soat » trien hoat, thien hoat, kiem soat
van hieu » cao hieu
luan » quan, 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 luat ) or ( ((dinh dang) OR (dinh dung)) quang toan tien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van hieu luat ) OR ( ((dinh dang) OR (dinh dung)) quang toan tien soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh dung luan van hieu luat ) or ( ((dinh dang) OR (dinh dung)) quang toan tien soat ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan van hieu luat ) or ( ((dinh dang) OR (dinh dung)) quang toan tien soat ))*.