1. A system for extracting analogous queries, the system comprising: a search query extracting module configured to create a per-user search query DB by reading search queries inputted by users from a search log DB that contains user device identifiers, search queries inputted from user devices, and information about time when the users request a search; a query pair extracting module configured to create a per-user query pair DB by extracting, from the per-user search query DB, permutations of different two search queries among search queries inputted by a specific user; and an analogous query extracting module configured to read query pairs having a specific query in the per-user query pair DB, and to create analogous queries by extracting counterparts of a specific query from the query pairs, wherein the analogous queries are provided in response to a search request for a specific query from the user device.