You can take advantage of the Sourcing Candidate module without candidate scoring if you use your own Google Custom Search Engine setup. You are able to use quota 100 search queries per day for free.
- Add API Key and CS your Custom Search Engine (CSE) at the page Settings
- Use https://programmablesearchengine.google.com/ to create your own CSE
CX is Search Engine ID
- Get API Key at https://developers.google.com/custom-search/v1/overview