using System;
using System.Text.RegularExpressions;
 
public class Test
{
public static void Main()
{
string str = @"Hewlett Packard LaserJet Printer Thingy
Sony LaserJet Printer Thingy";
string result = Regex.Replace(str, @"(?m)^(Hewlett Packard\s*|[A-Z][a-z]+\s*)", "");
Console.WriteLine(result);
Console.ReadLine();
}
}