hey like i stated within the question i would like make use of the plus sign(+) rather than dashes therefore the posts is going to be like this: some+publish+test another question , after i use non-latin figures the wordpress break the permalink and preserve just 30 words !! how do i solve that?

The + sign is really a reserved character in Web addresses and can translate to some space .

From what you're saying, though, your underlying problem is you desire to use non-ASCII figures in Web addresses. That's not valid to begin with: You'll have to percent scribe the slug before placing it. Most contemporary browsers can have the URL in the proper form anyway.

Here is definitely an on-line tool for percent-encoding incoming data. For instance, the UTF-8 input of

Crêpes 

will translate to

 Cr%C3%AApes

Background info: Unicode characters in URLs