Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
can van » cac van, tan van, cao van
can ban » van ban, 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: ho chieu sach - nhanh tinh cua ((hang cong) or (bang cong)) ((can van) OR (can ban)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - nhanh tinh cua ((hang cong) OR (bang cong)) ((can van) OR (can ban)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - nhanh tinh cua ((hang cong) or (bang cong)) ((can van) OR (can ban)) ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - nhanh tinh cua ((hang cong) or (bang cong)) ((can van) OR (can ban)) ban*.