Search multiple strings in file using autoit script

I have file called Test.txt contains

Introduction
License
Installation Directory
Frequently Asked Questions (FAQ)
Credits
History ChangeLog
History of and Developers
Running Scripts
Script Editors
Compiling Scripts
Window Info Tool (Info)
Window Titles and Text (Basic)
Window Titles and Text (Advanced)
Controls
Running under normal user

I wanted get multiple string "License", "Script Editors", "Controls","Window Info Tool (AU3Info)" as print ouput with searched lines using autoit

below code I can search only one time

#include <File.au3>
#include <array.au3>
$file = @ScriptDir & "\file.txt"
$search = "word"

If FileExists($file) Then
    $contents = FileRead($file)
    If @error Then
        MsgBox(0, 'File Error', $file & ' could not be read.')
    Else
        For $i = 1 To $count
            If StringInStr($contents, $search) Then        
                MsgBox(0, 'found', $file & ' does contain the text "' & $search & '"')
            Else
                MsgBox(0, 'Not', $file & ' does NOT contain the text "' & $search & '"')
            EndIf
        Next
    EndIf
EndIf