Perhaps you should try some spelling variations:
thanh luan » tranh luan, thanh xuan, thanh tuan
doi chieu » doc hieu, doi chi, mot chieu
dong dung » dong duong, duong dung, cong dung
dung data » dung dat, dung dan, dung danh
data phan » dam phan, sat phan, vat phan
phan van » pham van, thanh van, tran van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sang - thanh luan van dong dung data phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - thanh luan van dong dung data phan van.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sang - thanh luan van dong dung data phan van*.