Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
canh trinh » canh tranh, canh tinh, anh trinh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
van nhung » van nhuong, va nhung, van hung
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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) OR (chinh sach)) - ((canh trinh) or (hanh trinh)) van nhung cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - ((canh trinh) OR (hanh trinh)) van nhung cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chinh sach)) - ((canh trinh) or (hanh trinh)) van nhung cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chinh sach)) - ((canh trinh) or (hanh trinh)) van nhung cong dan phan cau*.