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
thang va » hang va, trang va, thong va
va trong » va truong, va thong, va tuong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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