Can not install laravel

I can not install Laravel in this way:

php composer.phar create-project laravel/laravel blog --prefer-dist ~5.0
php composer.phar create-project laravel/laravel blog --prefer-dist 5.0
php composer.phar create-project laravel/laravel blog --prefer-dist
php composer.phar create-project laravel/laravel blog

Response in console:

Could not find package laravel\laravel with stability stable.

or

Could not find package laravel\laravel with version ~5.0.

I'm trying do this in another way like that:

 php laravel new blog

Project doest not exist after crafting project or I have info in console:

cURL error 7: Failed to connect to 192.241.224.13 port 80: Timed out

What is wrong with this stupid composer ? :(

via Chebli Mohamed