Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hanh mang » nhanh mang, hanh trang, nhanh lang
30 trieu » 25 trieu
va trong » va truong, va thong, va tuong
cong tan » cong tac, cong san, cong ty
toan ban » van ban
mang va » mang vua, hang va, bang va

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 va trong ((cong tan) OR (cong thanh)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "30 trieu tinh - hanh mang va trong ((cong tan) OR (cong thanh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - hanh mang va trong ((cong tan) OR (cong thanh)) toan ban*.