Find multiple rows from database searching from textBox - winforms

I have the below code which reads in an IMEI number from a textbox and uses the value to search an accessDB for the corresponding row of data to display in a datagridview.

I don't have a search button the app just searches for it once the number goes in (always 15 digits).

My problem is that for some IMEI numbers there are more than one row of data with that IMEI.

Sometimes only one row of data is returned instead of 3. It just takes the first instance it finds which is often an overridden version and is deleted by checkDeleted().

How can I get it to keep searching?

The checkDeleted() method checks for if the row is Overridden and removes that row.

private void txtScannedValue_TextChanged(object sender, EventArgs e)
    {
        if (txtScannedValue.Text.Length == 15)
        {
            conn1.Open();

            OleDbCommand cmd1 = new OleDbCommand("Select * from TBL where IMEI=@param1", conn1);
            cmd1.Parameters.AddWithValue("@param1", txtScannedValue.Text);
            OleDbDataReader reader1;
            reader1 = cmd1.ExecuteReader();

            DataTable dt = new DataTable();
            dt.Load(reader1);

            if (dt.Rows.Count > 0)
            {
                if (dataGridView1.DataSource != null)
                {
                    ((DataTable)dataGridView1.DataSource).ImportRow(dt.Rows[0]);
                    checkDeleted();
                }
                else
                {
                    dataGridView1.DataSource = dt;
                }
            }
            else
            {
                MessageBox.Show("No Data Found");
            }

            //reset textBox
            txtScannedValue.Text = "";

            conn1.Close();
        }
    }

example database