Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh luan » khanh luan, hang luan, hanh luat
dang cong » dung cong
van dang » van dong, van dung, van nang
cong van » cong vang, cong san, song van
van quan » van ban
quan doi » quan tri, quan li

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)) tinh - hanh luan van dang cong van quan doi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) tinh - hanh luan van dang cong van quan doi*.