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Today, Cloud computing is becoming a household technology. In cloud, a shared pool of computing resources can be accessed on demand through internet and web applications. Since outsourced data is in third party premises i.e. cloud, accountability of user data is paramount. To preserve privacy and security of user data in cloud, many cryptographic techniques have been proposed by many scientists. One among them is searchable encryption. Searchable encryption allows secure search over encrypted data. In our system, a noble approach has been made using the Elliptic Curve Cryptography (ECC), a cryptographic techniques to reduce the overall computation overhead. Dynamic B+ tree data structure is used to perform multi-keyword search over the encrypted data. To retrieve appropriate data files, ranking will be done based on relevance score. Finally, we compare the effectiveness and efficiency of our proposed scheme with our previous work on CRSA/B+ tree through extensive experimental evaluation using Microsoft azure platform.