Как сделать чтобы замена текста в WORD производилась по всему документу - C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using Word = Microsoft.Office.Interop.Word;
 
namespace WindowsFormsApplication9
{
    public partial class Form1 : Form
    {
        private readonly string TemplateFileName = @"C:\Шаблоны\Договор.doc";
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            var kontr = textBox1.Text;
            var dog = textBox2.Text;
            var data1 = dateTimePicker1.Text;
            var data2 = dateTimePicker2.Text;
            var ruk = comboBox1.Text;
            var f = textBox3.Text;
            var i = textBox4.Text;
            var o = textBox5.Text;
            var datar = dateTimePicker3.Text;
            var gr = comboBox2.Text;
            var prbez = comboBox3.Text;
            var izj = comboBox4.Text;
            var datab = dateTimePicker4.Text;
            var dataot = dateTimePicker5.Text;
            var datado = dateTimePicker6.Text;
            var prof = textBox8.Text;
            var chas = textBox9.Text;
            var summa = textBox10.Text;
            var richtext = richTextBox1.Text;
 
            //TODO: Word Export
            var wordApp = new Word.Application();
            wordApp.Visible = false;
 
            try
            {
                var wordDocument = wordApp.Documents.Open(TemplateFileName);
                ReplaceWordStub("{dog}", dog, wordDocument);
                ReplaceWordStub("{kontr}", kontr, wordDocument);
                ReplaceWordStub("{data1}", data1, wordDocument);
                ReplaceWordStub("{data2}", data2, wordDocument);
                ReplaceWordStub("{ruk}", ruk, wordDocument);
                ReplaceWordStub("{f}", f, wordDocument);
                ReplaceWordStub("{i}", i, wordDocument);
                ReplaceWordStub("{o}", o, wordDocument);
                ReplaceWordStub("{datar}", datar, wordDocument);
                ReplaceWordStub("{gr}", gr, wordDocument);
                ReplaceWordStub("{prbez}", prbez, wordDocument);
                ReplaceWordStub("{izj}", izj, wordDocument);
                ReplaceWordStub("{datab}", datab, wordDocument);
                ReplaceWordStub("{dataot}", dataot, wordDocument);
                ReplaceWordStub("{datado}", datado, wordDocument);
                ReplaceWordStub("{prof}", prof, wordDocument);
                ReplaceWordStub("{chas}", chas, wordDocument);
                ReplaceWordStub("{summa}", summa, wordDocument);
                ReplaceWordStub("{richtext}", richtext, wordDocument);
                
                wordDocument.SaveAs(@"c:\result.doc");
                wordApp.Visible = true;
            }
            catch
            {
                MessageBox.Show("Произошла ошибка");
            }
        }
        private void ReplaceWordStub(string StubToReplace, string text, Word.Document wordDocument)
        {
            var range = wordDocument.Content;
            range.Find.ClearFormatting();
            range.Find.Execute(FindText: StubToReplace, ReplaceWith: text);
        }
    }
}