Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hanh mang » nhanh mang, nhanh lang, thanh hang
30 trieu » 25 trieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: 30 trieu tinh - ((hanh mang) or (hanh trang)) va dung ((cong dan) OR (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - ((hanh mang) OR (hanh trang)) va dung ((cong dan) OR (cong tan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "30 trieu tinh - ((hanh mang) or (hanh trang)) va dung ((cong dan) OR (cong tan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - ((hanh mang) or (hanh trang)) va dung ((cong dan) OR (cong tan)) toan ban*.