Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, nhanh trong
chuan luong » chuan long, chat luong, luan luong
hanh trong » hanh trang, anh trong, hinh trong
luong cong » dung cong, trong cong, cong cong
mot trieu » mot chieu, mot tri, mon triet
ho trieu » 25 trieu, 30 trieu, ho chieu
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (mot trieu)) tinh - ((thanh trong) OR (hanh trong)) chuan luong cong san than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) or (mot trieu)) tinh - ((thanh trong) OR (hanh trong)) chuan luong cong san than cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (mot trieu)) tinh - ((thanh trong) OR (hanh trong)) chuan luong cong san than cau*.