Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
trung dai » truong dai, truong dao, trung tam
dung cong » dung trong
cong dang » cong dong, cong dan, cong dung
tung dan » dung dan, dung dat, vung dat
dang van » hoang van, hang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - thanh ((((tung dan) OR (trung dai))) or (huong dan)) dung cong dang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thanh ((((tung dan) OR (trung dai))) OR (huong dan)) dung cong dang van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - thanh ((((tung dan) OR (trung dai))) or (huong dan)) dung cong dang van ban*".