Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
ho chieu » theo chieu, hoc thieu, doi chieu
cong van » cong vang, song van, cong tan
cong san » cong tac
ve dung » ve duong, va dung, te dung
ve rung » le trung, he trung, va trung
hai tap » hai thap, bai tap, han tap

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 chinh ((ve dung) OR (ve rung)) ((cong van) or (cong san)) hai tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh chinh ((ve dung) OR (ve rung)) ((cong van) OR (cong san)) hai tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh chinh ((ve dung) OR (ve rung)) ((cong van) or (cong san)) hai tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh chinh ((ve dung) OR (ve rung)) ((cong van) or (cong san)) hai tap*.