This plugin allows you to create domain search bars using widgets or shortcode.
After you install WordPress Domain Search (by uploading it to /wp-content/plugins/) you will need to navigate to the "Plugins" page from your dashboard and activate the plugin.
Activating the WordPress Domain Search plugin will create a domain search dashboard widget.
Activating the WordPress Domain Search plugin will also create a widget.
Once you have activated the widget you will have access to the customization options.
Now you can quickly and easily search for available domain names directly from your website.