Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
cong quang » luong quang, thong quang, duong quang
quang tran » quang tuan, quang trung, quang thanh
hoc thieu » toc thieu, hoc hien
tang suat » nang suat, tang luan, cong suat
tang luat » tang luan, nang suat, hang luan
tran ban » tranh ban, tran van, toan ban

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 (tang luat)) trong cong quang tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((tang suat) OR (tang luat)) trong cong quang tran ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((tang suat) or (tang luat)) trong cong quang tran ban*.