0 results when using multiple keywords

[chrisukgit]

Great tool!

I have noticed that the tool does not return results for multiple keywords - "filetype:pdf site:microsoft.com". This is the same for selenium and the http methods.

1. GoogleScraper -m http --keyword "filetype:pdf" works fine.
   2.GoogleScraper -m http --keyword "site:microsoft.com" works fine.
2. GoogleScraper -m http --keyword "filetype:pdf site:microsoft.com" fails to return results.

This looks like a parsing issue?

[chrisukgit]

This can be fixed with - #131