how to bolock bad words from the searching result

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C#

Hi brothers i am doing my final year project and i have presentation on this Friday 20-1-2012. my system is personal firewall and i have function which is to block the children from searching about the bad words and this function doesn't work with me so i want you to help me with this. when i insert the bad words in the system it's work means it's saved in the database but when i open the browser and i search about the word which in insert it to the database it is appear on the google result and i can open it, so i need those words i insert them to my database disappear on the browser result for example google result. below is the code which i did.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace MonitorNetwork
{
    public partial class AddWords : Form
    {
        public AddWords()
        {
            InitializeComponent();
        }

        private void AddWords_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection conn = new SqlConnection("Data Source=.\\SQLEXPRESS;Initial Catalog=MonitorNetworkDB;Integrated Security=True");
            SqlCommand cmd = conn.CreateCommand();
            cmd.CommandText = "Insert Into WordsTable (Words) Values (@Words)";

            // Fill our parameters

            cmd.Parameters.Add("@Words", SqlDbType.NVarChar, 50).Value = this.textBox1.Text;
            //cmd.Parameters.Add("@SourceMask", SqlDbType.NVarChar, 50).Value = this.txtIpMask.Text;
            //cmd.Parameters.Add("@SourcePort", SqlDbType.NVarChar, 50).Value = this.txtPort.Text;
            //cmd.Parameters.Add("@DestinatorIP", SqlDbType.NVarChar, 50).Value = this.txtIPAddress1.Text;
            //cmd.Parameters.Add("@DestinatorMask", SqlDbType.NVarChar).Value = this.txtIPMask1.Text;
            //cmd.Parameters.Add("@DestinatorPort", SqlDbType.NVarChar).Value = this.txtport1.Text;
            //cmd.Parameters.Add("@Protocol", SqlDbType.NVarChar).Value = this.comboBox1.Text;

            try
            {
                // Execute the command
                conn.Open();
                cmd.ExecuteNonQuery();
                conn.Close();

                MessageBox.Show("New Word Added Successfully!");
                textBox1.Clear();

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBox1.Clear();
        }
    }
}