Google/DuckDuckGo blocks te requests. "disable_api" => false, // Fallback to another librex instance if google search fails // This may greatly increase the time it takes to get a result, if a direct search is not possible "instance_fallback" => true, // Ensure cookies are only sent over HTTPS "httponly" => true, // how long in minutes to store results for in the form of source code under the third party that is in the list meets this criterion. 1. Source Code. The "source code" for a particular user, "normally used" refers to version 3 of the GNU General Public License.