Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
hang cong » dang cong, hang nong, bang cong
hanh tai » thanh tai, hang tai, han tai
tai tuan » tri tuan, ta tuan, tai quan
dan than » dan chan, ban than, van than

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tai tuan ((nhung cong) OR (hang cong)) ((xuan toan) OR (dan than)) ban~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tai tuan ((nhung cong) or (hang cong)) ((xuan toan) or (dan than)) ban*.