1. A method of detecting duplicate documents in search results, the method comprising: receiving a query comprising at least one phrase; retrieving a plurality of documents responsive to the query to form a search result; for each of the retrieved documents, generating a document description comprising selected sentences of the document, wherein the selected sentences are ordered in the document description as a function of a number of phrases in each sentence; responsive to the document description of at least two documents matching, discarding at least one of the two documents from the search result.