using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        const string TARGET_STRING = "Hello World (707(y)(9)";

        var regEx = new Regex("\\s?[;\\\\/:*?\"<>|&'()-]+\\s?");

        string result = regEx.Replace(TARGET_STRING, " ");

        Console.WriteLine(TARGET_STRING);

        Console.WriteLine(result);

    }

}