Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tong cong » trong cong, cong cong, dung cong
doanh cao » doanh co, doanh bao, doanh cho
tinh cua » trinh cua, sinh cua, tinh chat
cua tong » cua cong, cua dong, cua nong
cong tap » cuong tap, cong tac, cong tan
doan cau » toan cau, doan dau, doan cap
toan tap » toan ban

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 - hanh tinh cua tong cong tap ((doan cau) or (((doanh cao) or (toan tap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tinh cua tong cong tap ((doan cau) OR (((doanh cao) OR (toan tap)))).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tinh cua tong cong tap ((doan cau) or (((doanh cao) or (toan tap))))*.