Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh trinh » hanh chinh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi ((chieu sach) OR (chieu sang)) - ((hanh trinh) or (canh tranh)) cua dung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((chieu sach) OR (chieu sang)) - ((hanh trinh) OR (canh tranh)) cua dung cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((chieu sach) OR (chieu sang)) - ((hanh trinh) or (canh tranh)) cua dung cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoi ((chieu sach) OR (chieu sang)) - ((hanh trinh) or (canh tranh)) cua dung cong dan toan ban*.