Google AJAX API Search - returns only 4 values

Question

Hi Im writing a simple class which I am going to use for some testing. My problem being it is only returning 4 results per search phrase. The output is:

foo

http://en.wikipedia.org/wiki/Foobar

http://www.foofighters.com/

http://foo.com/

http://www.foopets.com/

bar

http://www.autorepair.ca.gov/

http://en.wikipedia.org/wiki/Bar_(unit)

http://www.barnightclub.com/

http://www.greathomebars.com/

my class is:

<?php
class true_seo {

 public $string, $amount;
 private $arr;

 public function __construct(){}

 public function set_g_key( $key ) {
  $this->g_key = $key; 
 }

 public function set_phrase( $string ){
  if( is_string ( $string ) ) {
   $string = array( $string ); 
  }
  if( is_array ( $string ) ) {
   $this->phrases = $string;
  }else{
   Throw new exception("incorect input for phrase, string or array"); 
  }
 }

 public function get_sites( $amount ) {
  require_once "simple_html_dom.php";
  $arr = array();
  foreach( $this->phrases as $phrase ) {
   $APIparams = array("key" => $this->g_key, "q" => $phrase, "start" => 0, "maxResults" => $amount, "filter" => true, "restrict" => "", "safeSearch" => false, "lr" => "lang_en", "ie" => "", "oe" => ""); 
   if( $data = true_seo::google_search_api( $APIparams ) ) {
    foreach( $data as $obj ) {
     $arr[$phrase]['data'][] = $obj;
    } 
   }else{
    Throw new exception("Request error: no results returned from Google.");
   }
  }
  $this->links = $arr;
 }

 public function google_search_api($args, $referer = 'http://localhost/seo/', $endpoint = 'web'){
  $url = "http://ajax.googleapis.com/ajax/services/search/".$endpoint;
  if ( !array_key_exists('v', $args) ) {
   $args['v'] = '1.0';
  }
  $url .= '?'.http_build_query($args, '', '&');
     if( $result = @file_get_contents($url) ) {
   return json_decode($result); 
  }else{
   Throw new exception("No data returned from url: $url"); 
  }
 } 
}

?>

and called using:

<?php
try{
 require "./classes/class_true_seo.php";
 $seo = new true_seo();
 $seo->set_g_key('ABQIAAAAsWzmZ4RXdIk0a-LqpqKCBRSW9rnkYkKNylryTgzW0Ct2FO9LJBSysazpU6aDIzBYBBRMiLQ9syYp0g');
 $seo->set_phrase(array("foo","bar"));
 $seo->get_sites(10);
 foreach( $seo->links as $key => $phrase_return ){
  echo "<h2>" . $key . "</h2>";
  foreach( $phrase_return['data'][0]->results as $results ){
   echo "<p>" . $results->url . "</p>"; 
  }
 }
}catch(Exception $err){
 echo $err->getMessage(); 
}

?>

Any help is much appreciated