Perhaps you should try some spelling variations:
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
vang tuan » van tuan, vong tuan, quang tuan
ho trieu » mot trieu, 30 trieu, ho chieu
25 trieu » 30 trieu
tranh va » tranh van, trang va, trinh va
tuan cau » toan cau, quan cau, tuan cu
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: ((ho trieu) or (25 trieu)) tinh - canh tranh va dung cong vang tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (25 trieu)) tinh - canh tranh va dung cong vang tuan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (25 trieu)) tinh - canh tranh va dung cong vang tuan cau*.