Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
cong dan » cong san, cong tan, huong dan
tung va » tuong va, dung va, vung va
dan van » dang van, doan van, dao 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 - thanh ((tung va) or (trung va)) nhung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tung va) OR (trung va)) nhung cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tung va) or (trung va)) nhung cong dan van ban*.