Thank you for your query.
As per our conversation you'll need to adjust the "Smart search results" since it's not possible to achieve this within the "Smart search box". In "Smart search results" webpart properties please go to Pager desing section and hit the Edit button for the Pager layout item. Then please insert the following code to the transformation.
<div class='ResultCount'><%# Eval("Items") + " result(s) for " + CMS.Helpers.URLHelper.GetUrlParameter(CMS.Helpers.RequestContext.CurrentURL,"searchtext") %></div>
Then you can style the ResultCount class with CSS (by clicking the Add CSS styles button in the Transformation properties window) and use abolute positioning to place it below the search box.
I hope you'll find this information helpful.
Best regards, Matúš Chamula