Thanks for your response.
Well I don't think it's a specific term/terms, because the code worked for the first 30-40 terms, then gave me a run-time error, but when I ran it again a couple hours later, the code continued on lines 40-60ish, then gave me another run-time error, and I ran it again until line 90ish. No specific search string seems to have given an error, but it seems after a certain amount of time sending the xml request, my access is denied...