using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        var item = "random words \"text to extract\" random words continue";

        int pFrom = item.IndexOf('"')+1;

        int pTo = item.LastIndexOf('"');

        String result = item.Substring(pFrom, pTo - pFrom);

        result.Dump();

​

​

        foreach(Match match in Regex.Matches(item, "\"([^\"]*)\""))

            Console.WriteLine(match.Groups[1].Value);

    }

}