An electronic device is provided. The electronic device includes a memory configured to store information associated with a user, and a query managing module that is functionally connected with the memory wherein the query managing module is configured to execute acquiring a query, determining at least one word associated with the user, from the query, obtaining a result of a first search executed, based on the at least one word, from a set of protected data associated with the user, changing at least a part of the query, based on the result of the first search, and providing a result of a second search executed, based on the changed query, from a set of public data.