Perhaps you should try some spelling variations:
dang quang » dung quang, nang quan, dang hung
quang toan » quang tuan, quang tran, quang doan
tinh dung » trinh dung, tin dung, tinh quang
hieu hoat » hieu hoa, thien hoat, hieu luat
minh dang » minh danh, minh hang, binh dang
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 hoat ) or ( minh dang quang toan tien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van hieu hoat ) OR ( minh dang quang toan tien soat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan van hieu hoat ) or ( minh dang quang toan tien soat ))*.