Research on Efficient Searchable Data Encryption in Mobile Cloud Storage focuses on developing secure and performance-optimized mechanisms for searching encrypted data stored in cloud environments accessed via mobile devices. Modern approaches employ dynamic searchable encryption schemes, fuzzy keyword search, and privacy-preserving authorized search protocols to ensure data confidentiality while enabling efficient query processing. Edge-based architectures and traffic- and energy-saving designs further enhance performance by offloading computation-intensive tasks and minimizing bandwidth and power consumption. Forward and backward privacy techniques, chaotic transformations, and verifiable search frameworks ensure that sensitive information remains protected against unauthorized access, while supporting flexible and accurate data retrieval in mobile cloud applications.