Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
mot trieu » mot chieu, mot tri, mon triet
30 trieu » 25 trieu
tranh va » tranh van, trang va, trinh va
va duong » van duong, va tuong, va huong
cong van » cong vang, cong san, song van
bang cac » nang cao, hang ca, hang cau
dung cac » luong cac, dung cho, dung tai

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

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