The present invention relates to a system and method for information process using artificially constructed apparatus. More specially, the present invention provides a system and method that can search for information in a document structure and provide precise results by analyzing the inputs and search results using the executing system and the knowledge structure of the think system. In one preferred embodiment of the present invention, the search terms are divided into subject terms and corresponding feature terms, and document entry files comprising respective subject terms and corresponding feature terms will provide access to documents including subject terms and corresponding feature terms.