Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
doc chieu » doc hieu, doi chieu, toc thieu
hanh dung » thanh dung, anh dung, hanh dong
cua khong » hua khong, cua phuong, cua thuong
cua tong » cua cong, cua dong, cua nong
cong ban » cong bang, cong san, cong tan
hang tai » hang va, dung tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - hanh dung ((cua tong) or (cua khong)) ((cong ban) or (cong thanh)) hang tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sach - hanh dung ((cua tong) OR (cua khong)) ((cong ban) OR (cong thanh)) hang tai.
• Adding a wildcard symbol may retrieve word variants: doc chieu sach - hanh dung ((cua tong) or (cua khong)) ((cong ban) or (cong thanh)) hang tai*.