Perhaps you should try some spelling variations:
vang thanh » van thanh, dang thanh, tang thanh
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » theo chieu, hoc thieu, doi chieu
30 trieu » 25 trieu
cong cua » cong cu, dong cua, huong cua
cua dung » cua dang, cua dong, qua 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 chieu) or (30 trieu)) tinh - thanh cong cua dung cong vang thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (30 trieu)) tinh - thanh cong cua dung cong vang thanh cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (30 trieu)) tinh - thanh cong cua dung cong vang thanh cau*.