Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
thanh phan » thanh pho, thanh san, thanh toan
doi chieu » doc hieu, doi chi, mot chieu
toan tuan » tran tuan, toan quan, doan tuan
dung cong » dung trong
van quan » van ban
phan thi » pham thi, tran thi, phan tu

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 sach - thanh ((toan tuan) or (van quan)) dung cong thanh phan thi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((toan tuan) OR (van quan)) dung cong thanh phan thi.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((toan tuan) or (van quan)) dung cong thanh phan thi*.