Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dang thanh » dong thanh, dang hanh, hoang thanh
doc chieu » doc hieu, doi chieu, toc thieu
tran dung » tran dang, tran hung, trung dung
cong dang » cong dong, cong dan, cong dung
thanh lap » thanh san, phan lap, thanh hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - thanh cong ((tran dung) or (tran quang)) cong dang thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sach - thanh cong ((tran dung) OR (tran quang)) cong dang thanh lap*.