Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((hanh trang) or (hanh trinh)) cua nhung ((cong dan) OR (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh trang) OR (hanh trinh)) cua nhung ((cong dan) OR (cong san)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh trang) or (hanh trinh)) cua nhung ((cong dan) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh trang) or (hanh trinh)) cua nhung ((cong dan) OR (cong san)) than cau*.