Oh, one more thing just came to my mind, try disabling the "Prevent non-SEF variables from overwriting the parsed ones" option in JoomSEF's Advanced configuration.

I found that the paging works very well in search results, the problem only exists in the module "Villes populaires" who is on the home page .
I also found that all the links are not working redirect to this page: http://www.morocco-immo.com/categories-de-biens

I try to identify the problem

thank you very much

oooh it works, you're the best, thank you a lot my friend :)