1. A system for searching information and displaying search results, the system comprising: a web server comprising an inputting module configured for receiving one or more keywords; and a search server comprising: an obtaining module configured for obtaining search results according to the one or more keywords, the search results comprising one or more documents; a confirming module configured for confirming at least one cluster name according to the search results, and clustering each of the one or more documents in the search results into a corresponding cluster name, classifying each document in the search results into a corresponding field, and thus obtaining classified search results; a generating module configured for generating a cluster diagram according to the at least one cluster name and the clustered documents, and generating a cluster-classification diagram according to the classified search results and the generated cluster diagram; the web server further comprising an outputting module configured for outputting the generated cluster-classification diagram.