@proweb, this was mentioned by Mike-XS, but I don't think you understood.
is NOT a search engine friendly URL. Spaces are never allowed in a URL. A space is not a valid URL character. Unless a hexadecimal %20 is substituted in place of the space, the URL won't even work on a Unix or Linux server.
mysite.com/news/this is the sef url
It sounds like you may be working with a Microsoft server. MS servers allow you to do several things that are not valid on the web. You could never do that on a Linux or Unix server. Spaces are not allowed in URLs, file names or directory names. Using URL encoding will work to eliminate the spaces, but it makes a sloppy-looking URL.
The standard search engine friendly URL would be
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin