Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
hanh tram » hanh trang, thanh tran, thanh tra
hanh tam » thanh tam, nhanh tam, hanh lam
cong dan » cong san, cong tan, huong dan
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: theo ((chieu sach) or (chinh sach)) - ((hanh tram) OR (hanh tam)) tuan thong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - ((hanh tram) OR (hanh tam)) tuan thong cong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chinh sach)) - ((hanh tram) OR (hanh tam)) tuan thong cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chinh sach)) - ((hanh tram) OR (hanh tam)) tuan thong cong dan van ban*.