using System;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        var regex = new Regex(@"\bjumped\b.*?\bthe\b");

        var str = "The dog jumped over theatre cat and the cat bejumped above the mouse.";

        var matches = regex.Matches(str);

        Console.WriteLine("Count : " + matches.Count);

        foreach (var match in matches)

        {

            Console.WriteLine(match);

        }

    }

}