Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
hanh van » thanh van, khanh van, hanh va
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh van ban ((hang cong) or (bang cong)) dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh van ban ((hang cong) OR (bang cong)) dan chan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh van ban ((hang cong) or (bang cong)) dan chan cau*.