Sky Torrents' search engine works by aggregating torrent files from various sources across the internet, providing users with a comprehensive search functionality to locate specific content. The platform's architecture relies on web crawling, torrent file aggregation, and a centralized database to provide users with a vast library of torrent files. While Sky Torrents offers several features that enhance its search engine functionality, the platform faces challenges and limitations related to content availability, copyright issues, and malware risks.