Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trang » thanh trung, hanh trinh, minh trang
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
cong dang » cong dong, cong dan, cong dung
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: theo ((chieu sach) or (chieu tinh)) - ((hanh trang) OR (canh tranh)) cua thong cong dang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu tinh)) - ((hanh trang) OR (canh tranh)) cua thong cong dang van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu tinh)) - ((hanh trang) OR (canh tranh)) cua thong cong dang van ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu tinh)) - ((hanh trang) OR (canh tranh)) cua thong cong dang van ban*.