Perhaps you should try some spelling variations:
truong luan » truong quan, truong luat, truong quang
tinh truong » trinh truong, sinh truong, minh truong
tinh dung » trinh dung, tin dung, tinh quang
hieu suat » hieu luat, hieu qua
bien soan » bien so
van hieu » cao hieu
van bien » van tien, van hien, vat bien

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 suat ) or ( tinh truong luan van bien soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van hieu suat ) OR ( tinh truong luan van bien soan ))*.