Perhaps you should try some spelling variations:
thien toan » thien thanh, thien van, thien tai
dung quang » dang quang, dung quan, luong quang
kien toan » kiem toan, dien toan, ke toan
tinh dung » tin dung, tinh quang, tinh huong
quang vat » quang va, quang van, quang phat
bien soan » bien so
vat bien » vat lieu, cam bien
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: (( trinh dung luan van ((kien toan) OR (thien toan)) ) or ( tinh dung quang vat bien soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh dung luan van ((kien toan) OR (thien toan)) ) OR ( tinh dung quang vat bien soan )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( trinh dung luan van ((kien toan) OR (thien toan)) ) or ( tinh dung quang vat bien soan ))".
• Adding a wildcard symbol may retrieve word variants: (( trinh dung luan van ((kien toan) OR (thien toan)) ) or ( tinh dung quang vat bien soan ))*.