Search/tweet lang


When send a search to the Twitter API i only want to search for three “lang” (en fr es) and when i try to send three lang at the same time it returns nothing and when i send two it return a good result. how could i send three lang in the twitter api.

i’m currently working in php

$twitter[‘rpp’] = ‘50’;
$twitter[‘result_type’] = ‘recent’;
$twitter[‘include_entities’] = ‘true’;
$twitter[‘lang’]=‘en fr es’;