combination of all keywords with one sentence

 string text = @"Historically, the world of data and the world of objects " +
               @"have not been well integrated. Programmers work in C# or Visual Basic " +
               @"and also in SQL or XQuery. On the one side are concepts such as classes, " +
               @"objects, fields, inheritance, and .NET Framework APIs. On the other side " +
               @"are tables, columns, rows, nodes, and separate languages for dealing with " +
               @"them. Data types often require translation between the two worlds; there are " +
               @"different standard functions. Because the object world has no notion of query, a " +
               @"query can only be represented as a string without compile-time type checking or " +
               @"IntelliSense support in the IDE. Transferring data from SQL tables or XML trees to " +
               @"objects in memory is often tedious and error-prone.";

            // Split the text block into an array of sentences. 
            string[] sentences = text.Split(new char[] { '.', '?', '!' });

            // Define the search terms. This list could also be dynamically populated at runtime. 
            string[] wordsToMatch = { "Historically", "data", "integrated" };

            // Find sentences that contain all the terms in the wordsToMatch array. 
            // Note that the number of terms to match is not specified at compile time. 
            var sentenceQuery = from sentence in sentences
                                let w = sentence.Split(new char[] { '.', '?', '!', ' ', ';', ':', ',' },
                                                        StringSplitOptions.RemoveEmptyEntries)
                                where w.Distinct().Intersect(wordsToMatch).Count() == wordsToMatch.Count()
                                select sentence;

            // Execute the query. Note that you can explicitly type 
            // the iteration variable here even though sentenceQuery 
            // was implicitly typed. 
            foreach (string str in sentenceQuery)
            {
                Console.WriteLine(str);
            }

            // Keep the console window open in debug mode. 
            Console.WriteLine("Press any key to exit");
            Console.ReadKey();