public function search($keyword = null, $startingIndex = 1)
    {
        // Handle if keyword is null or empty string
        if ($keyword === null || $keyword === '') {
            return false;
        }

        $url = 'https://www.googleapis.com/customsearch/v1?key=' . $this->apiKey .
               '&cx=' . $this->apiCx .
               '&q=' . urlencode($keyword) .
               '&hl=sv&siteSearchFilter=i&alt=json&start=' . $startingIndex;

        $results = $this->request($url);
        return $results;
    }