gistfile1.php

<?php

global $post;

$originalPost = $post;

$engine = SearchWP::instance();               // instatiate SearchWP
$supplementalEngineName = 'my_search_engine'; // search engine name
$terms = 'soccer';                            // search terms, space separated
$page = 1;                                    // pagination

// perform the search
$posts = $engine->search( $supplementalEngineName, $terms, $page );

// some metrics to build pagination
$foundPosts = $engine->foundPosts;
$maxNumPages = $engine->maxNumPages;

// if we have results...
if( !empty( $posts ) )
{
  // loop through results
  foreach( $posts as $post ) : setup_postdata( $post ); ?>
    <li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
  <?php endforeach; ?>
}

$post = $originalPost;