Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dong thanh » truong thanh
doi chieu » doc hieu, doi chi, mot chieu
toan tuan » tran tuan, toan quan, toan luan
doan tuan » doan quan, doanh luan, doan quang
dung dong » dung cong, vung dong, dung trong
thanh tan » thanh toan, thanh tuan, thanh san
tan tai » toan tai, tang tai, tuan tai

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