Php code to show Product Categories

Hi,

I purchased the plugin and I am trying to show the product Category above the Product Name. I am using this code:
” rel=”bookmark” title=”<?php the_title_attribute(); ?>”><?php the_category(); ?>

But it is not displaying the categories. This is the page I am working on:
https://thesourceimports.com/advanced-search/

Also, for the thumbnail images, I am using this code:
<?php
if ( has_post_thumbnail() ) {
echo ‘<a href=”‘;
the_permalink();
echo ‘” rel=”bookmark” title=””>’;
echo ‘‘;
the_post_thumbnail(“”);
echo ‘‘;
}
?>

I need to add <?php the_title_attribute(); ?> inside the title””, but when I do this it doesn’t work:
title=”<?php the_title_attribute(); ?>

Any help would be greatly appreciated.

Thanks!
Andrea