Как изменить длину поисковой фразы Joomla

/**
  * Returns the lower length limit of search words
  *
  * @return  integer  The lower length limit of search words.
  * @since   1.6
  */
 public static function getLowerLimitSearchWord() {
     return 3;
 }
 /**
  * Returns the upper length limit of search words
  *
  * @return  integer  The upper length limit of search words.
  * @since   1.6
  */
 public static function getUpperLimitSearchWord() {
     return 20;
 }

/**
  * Returns the lower length limit of search words
  *
  * @return  integer  The lower length limit of search words.
  * @since   1.6
  */
 public static function getLowerLimitSearchWord() {
     return 2;
 }
 /**
  * Returns the upper length limit of search words
  *
  * @return  integer  The upper length limit of search words.
  * @since   1.6
  */
 public static function getUpperLimitSearchWord() {
     return 50;
 }

// filter out search terms that are too small
foreach( $aterms AS $aterm ) {
    if (JString::strlen( $aterm ) < 3) {
        $search_ignore[] = $aterm;
    }
}

// filter out search terms that are too small
foreach( $aterms AS $aterm ) {
    if (JString::strlen( $aterm ) < 2) {
        $search_ignore[] = $aterm;
    }
}

function limitSearchWord(&$searchword)
{
    $restriction = false;
 
    // limit searchword to 20 characters
    if ( JString::strlen( $searchword ) > 20 ) {
        $searchword     = JString::substr( $searchword, 0, 19 );
        $restriction    = true;
    }
 
    // searchword must contain a minimum of 3 characters
    if ( $searchword && JString::strlen( $searchword ) < 3 ) {
        $searchword     = '';
        $restriction    = true;
    }
 
    return $restriction;
}

function limitSearchWord(&$searchword)
{
    $restriction = false;
 
    // limit searchword to 20 characters
    if ( JString::strlen( $searchword ) > 50 ) {
        $searchword     = JString::substr( $searchword, 0, 49 );
        $restriction    = true;
    }
 
    // searchword must contain a minimum of 3 characters
    if ( $searchword && JString::strlen( $searchword ) < 2 ) {
        $searchword     = '';
        $restriction    = true;
    }
 
    return $restriction;
}

<input type="text" name="searchword" id="search_searchword" maxlength="20" value="<?php echo $this->escape($this->searchword) ?>" class="inputbox">

<input type="text" name="searchword" id="search_searchword" maxlength="50" value="<?php echo $this->escape($this->searchword) ?>" class="inputbox">

SEARCH_MESSAGE=Search term must be a minimum of 3 characters and a maximum of 20 characters.

SEARCH_MESSAGE=Search term must be a minimum of 2 characters and a maximum of 50 characters.