Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
cong quang » luong quang, thong quang, duong quang
quang doan » quan doan, quang hoan, quang toan
hoc thieu » toc thieu, hoc hien
tang suat » nang suat, tang luat, tang luan
hang luan » tang luan, dung luan
doan van » doan va, hoang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - hanh ((tang suat) or (hang luan)) trong cong quang doan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((tang suat) OR (hang luan)) trong cong quang doan van.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((tang suat) or (hang luan)) trong cong quang doan van*.