21. The method according to claim 12 , wherein the step for acquiring terms further acquires the terms in which the user has interest from a fifth display part which is used for the user to directly input specific terms in which the user has interest.
22. The method according to claim 21 , wherein the step for acquiring the terms, when acquiring the terms in which the user has interest from the fifth display part, further comprising the steps of: extracting the terms contained in the fifth display part to compose a new query; extracting a term graph relating to the terms; and displaying the extracted term graph in the first display part.