Query processing apparatus and method

According to various embodiments, the electronic device includes a memory for storing information relating to the user; And the query management module, comprising: a quality management module coupled to the memory and the functional is obtained the query, and determines the at least one word associated with the user from the query, and with respect to a set of protection data associated with the user based on the at least obtain the results of a first search performed on the basis of single words and, on the basis of the result of the first search to change at least a portion of the query and the modified relative to a set of public data query a second search performed may comprise an electronic device configured to return results. It is possible in other embodiments.