Method post request not working but Get method is working in Laravel 5

i am getting blank page for post request, but code is working well for get method.

Here my code is: Form:

Route:

Route::post(domainsearch, siteController@domainsearch);

Controller:

public function domainsearch() { $data[user] = \Input::get(subDomainText); return view(email_search,$data); }

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