This document discusses efficient and empirical keyword search using cloud computing. It proposes a secure and reliable keyword search scheme across multiple clouds that allows users to search for files privately and reliably. The proposed system uses an iterative encryption approach to ensure file privacy even if multiple cloud servers collude. It implements a bloom filter tree index structure and integrity verification algorithm to securely search encrypted files across clouds and detect malicious servers. The system aims to provide an efficient and secure solution for keyword search on outsourced encrypted data stored in multiple cloud servers.