Do you mean that you have non-latin characters in the news titles for example? The titles most probably take part of the url, so if you have any non latin characters, you might end up with unresolved url or an ugly looking one (due to the url encoding).
I suggest you the following - add a new meta field for your news items. Then, this metafield will serve as the real title - with all the special characters. In the original Title though, you could use only latin characters.
What do you think about this?
All the best,
the Telerik team