8. A system comprising: one or more devices to: provide a user interface to a client device, the user interface including: a first field to receive a first search term that is to be included in documents included within a set of search results, and a plurality of: a second field to receive a second search term that is to be excluded from the documents within the set of search results, a third field to receive information regarding a web site or a domain to which the set of search results will be restricted, a fourth field to receive selection of information regarding a language to which the set of search results will be restricted; receive, from the client device, input including the first search term within the first field; receive, from the client device, inputs including a plurality of: input including the second search term within the second field, input including the information regarding the web site or the domain within the third field, or input including the information regarding the language selected via the fourth field; identify a set of documents; filter the set of documents to obtain a filtered set of documents, documents in the filtered set of documents including the first search term and: excluding the second search term when the input including the second search term is received, being associated with the web site or the domain when the input including the information regarding the web site or the domain is received, or containing text in the language when the input including the information regarding the language is received; and provide information identifying the documents in the filtered set of documents.
8. A system comprising: one or more devices to: provide a user interface to a client device, the user interface including: a first field to receive a first search term that is to be included in documents included within a set of search results, and a plurality of: a second field to receive a second search term that is to be excluded from the documents within the set of search results, a third field to receive information regarding a web site or a domain to which the set of search results will be restricted, a fourth field to receive selection of information regarding a language to which the set of search results will be restricted; receive, from the client device, input including the first search term within the first field; receive, from the client device, inputs including a plurality of: input including the second search term within the second field, input including the information regarding the web site or the domain within the third field, or input including the information regarding the language selected via the fourth field; identify a set of documents; filter the set of documents to obtain a filtered set of documents, documents in the filtered set of documents including the first search term and: excluding the second search term when the input including the second search term is received, being associated with the web site or the domain when the input including the information regarding the web site or the domain is received, or containing text in the language when the input including the information regarding the language is received; and provide information identifying the documents in the filtered set of documents. 9. The system of claim 8 , where the one or more devices are further to: provide context information that includes at least one of information identifying a link or information identifying a category, the context information being provided by the one or more devices without input from the client device, where the documents in the filtered set of documents are associated with the context information.