Я нашел ответ на этом сайте, и он намного сложнее, чем первоначально предполагалось: http://word.mvps.org/faqs/customization/ReplaceAnywhere.htm
Следующий код взят с сайта выше, помимо поиска по всему документу, он включает в себя функциональность замены текста:
Public Sub FindReplaceAnywhere()
Dim rngStory As Word.Range
Dim pFindTxt As String
Dim pReplaceTxt As String
Dim lngJunk As Long
Dim oShp As Shape
pFindTxt = InputBox("Enter the text that you want to find.", "FIND" )
If pFindTxt = "" Then
MsgBox "Cancelled by User"
Exit Sub
End If
TryAgain:
pReplaceTxt = InputBox( "Enter the replacement." , "REPLACE" )
If pReplaceTxt = "" Then
If MsgBox( "Do you just want to delete the found text?", vbYesNoCancel) = vbNo Then
GoTo TryAgain
ElseIf vbCancel Then
MsgBox "Cancelled by User."
Exit Sub
End If
End If
'Fix the skipped blank Header/Footer problem
lngJunk = ActiveDocument.Sections( 1 ).Headers( 1 ).Range.StoryType
'Iterate through all story types in the current document
For Each rngStory In ActiveDocument.StoryRanges
'Iterate through all linked stories
Do
SearchAndReplaceInStory rngStory, pFindTxt, pReplaceTxt
On Error Resume Next
Select Case rngStory.StoryType
Case WdStoryType.wdEvenPagesHeaderStory, _
WdStoryType.wdPrimaryHeaderStory, _
WdStoryType.wdEvenPagesFooterStory, _
WdStoryType.wdPrimaryFooterStory, _
WdStoryType.wdFirstPageHeaderStory, _
WdStoryType.wdFirstPageFooterStory
If rngStory.ShapeRange.Count > 0 Then
For Each oShp In rngStory.ShapeRange
If oShp.TextFrame.HasText Then
SearchAndReplaceInStory oShp.TextFrame.TextRange, pFindTxt, pReplaceTxt
End If
Next
End If
Case Else
'Do Nothing
End Select
On Error GoTo 0
'Get next linked story (if any)
Set rngStory = rngStory.NextStoryRange
Loop Until rngStory Is Nothing
Next
End Sub
Public Sub SearchAndReplaceInStory(ByVal rngStory As Word.Range, ByVal strSearch As String , ByVal strReplace As String)
With rngStory.Find
.ClearFormatting
.Replacement.ClearFormatting
.Text = strSearch
.Replacement.Text = strReplace
.Wrap = wdFindContinue
.Execute Replace:=wdReplaceAll
End With
End Sub