The phrase is a specialized search query, often called a Google Dork
: The specific title of the movie being sought. Security and Legal Risks Intitle Index.of Mp4 Chennai Express %5BUPDATED%5D
18;write_to_target_document7;default0;6c3;18;write_to_target_document19;_02juabr5EJ2cseMPnb_JUA_20;9a3; "Intitle Index