Hi
1) Head Social module is a custom-html module published in position head-social after you disabled default editor from global configuration add this code below:
<ul class="social-list">
<li><a class="facebook" title="Facebook" href="https://www.facebook.com/joomlart"><i class="fa fa-facebook"></i></a></li>
<li><a class="twitter" title="Twitter" href="https://twitter.com/JoomlArt"><i class="fa fa-twitter"></i></a></li>
<li><a class="google-plus" title="Google plus" href="http://www.joomlart.com/"><i class="fa fa-google-plus"></i></a></li>
<li><a class="youtube" title="Youtube" href="http://www.joomlart.com/"><i class="fa fa-youtube"></i></a></li>
</ul>
2) Search Is a search module positioned in position named head-search with this Module Class Suffix in advanced tab " search-full" (remember to add an empty space at the beginning of class suffix ) .
Best regards
