Avoid Google IP-blockage while scraping for Wikipedia URls - vba

Question

for my master thesis I need to get the Wikipedia-URLs for a list of actors (approximately 20,000)
sktneer helped me with my first attempt to get the code running. Thank you again!
(see: Get Wikipedia page urls from an Excel list
)
One issue thats left, is that google blocks my queries after a couple of actors. (150-200)
A thought was to build in the Application.Wait command into the code, so that there would be a pause of 2-3 seconds before every new query.
Would this work and if, can you help me to impement this into the code?
Or is this the wrong way and is there even an easier solution?
sample
Code:
Sub XMLHTTP()
Dim url As String, lastRow As Long
Dim XMLHTTP As Object, html As Object, objResultDiv As Object, objH3 As Object, link As Object
Dim start_time As Date
Dim end_time As Date
Dim i As Long
Dim str_text As String
lastRow = Range("A" & Rows.Count).End(xlUp).Row
Dim cookie As String
Dim result_cookie As String
start_time = Time
Debug.Print "start_time:" & start_time
For i = 2 To lastRow
url = "https://www.google.de/search?q=" & Cells(i, 1) & "&rnd=" & WorksheetFunction.RandBetween(1, 10000)
Set XMLHTTP = CreateObject("MSXML2.serverXMLHTTP")
XMLHTTP.Open "GET", url, False
XMLHTTP.setRequestHeader "Content-Type", "text/xml"
XMLHTTP.setRequestHeader "User-Agent", "Mozilla/5.0 (Windows NT 6.1; rv:25.0) Gecko/20100101 Firefox/25.0"
XMLHTTP.send
If XMLHTTP.Status = 200 Then
Set html = CreateObject("htmlfile")
html.body.innerHTML = XMLHTTP.ResponseText
Set objResultDiv = html.getelementbyid("rso")
If Not objResultDiv Is Nothing Then
Set objH3 = objResultDiv.getelementsbytagname("H3")(0)
Set link = objH3.getelementsbytagname("a")(0)
str_text = Replace(link.innerHTML, "<EM>", "")
str_text = Replace(str_text, "</EM>", "")
Cells(i, 2) = str_text
Cells(i, 3) = link.href
DoEvents
Else
Cells(i, 2) = "Not Found"
Cells(i, 3) = "Not Found"
End If
Else
Cells(i, 2) = "Not Found"
Cells(i, 3) = "Not Found"
End If
Next
end_time = Time
Debug.Print "end_time:" & end_time
Debug.Print "done" & "Time taken : " & DateDiff("n", start_time, end_time)
MsgBox "done" & "Time taken : " & DateDiff("n", start_time, end_time)
End Sub