Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh thang » nhanh thang, thanh thang, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
hang cong » dang cong, hang nong, bang cong
thang va » hang va, trang va, thong va
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat

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 thang va ((hang cong) OR (dung trong)) ((dan toan) OR (dan chan)) cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh thang va ((hang cong) or (dung trong)) ((dan toan) or (dan chan)) cau*.