2. The information processing apparatus according to claim 1 , further comprising: a first providing unit that provides the determined co-occurrence character string to a user, such that the co-occurrence character string is selected by the user; and a second providing unit that provides information including the selected co-occurrence character string among the plurality of information obtained as the search result to the user.
2. The information processing apparatus according to claim 1 , further comprising: a first providing unit that provides the determined co-occurrence character string to a user, such that the co-occurrence character string is selected by the user; and a second providing unit that provides information including the selected co-occurrence character string among the plurality of information obtained as the search result to the user. 6. The information processing apparatus according to claim 2 , wherein the setting unit sets a character string input by the user as the search character string or sets a character string extracted on the basis of an operation history of the user as the search character string.