Demo simplehtmldom

<?php

include('../simplehtmldom/simple_html_dom.php');
$strLink = "http://dochanh.net/truyen-12792/tinh-mot-dem.html";

$html = file_get_html($strLink);
foreach($html->find('span[class="bold"]') as $e) {
    echo $e->innertext . "<br>";
}

?>