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
tinh cua » trinh cua, tinh chat, tranh cua
sinh cua » manh cua, dinh cuu, sinh va
can van » cac van, can ban, tan van

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) OR (sinh cua)) ((hang cong) or (bang cong)) can van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - nhanh ((tinh cua) OR (sinh cua)) ((hang cong) OR (bang cong)) can van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - nhanh ((tinh cua) OR (sinh cua)) ((hang cong) or (bang cong)) can van ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - nhanh ((tinh cua) OR (sinh cua)) ((hang cong) or (bang cong)) can van ban*.