Query similarity: how much data is used in practice?
When using the public Google APIs to retrieve results, I was only able to collect 4-10 results per query.


Here's how to get more than 10 results per query: https://support.google.com/customsearch/answer/1361951?hl=en


  Google Custom Search and Google Site Search return up to 10 results per query. If you want to display more than 10 results to the user, you can issue multiple requests (using the start=0, start=11 ... parameters) and display the results on a single page. In this case, Google will consider each request as a separate query, and if you are using Google Site Search, each query will count towards your limit.


There are other search engine APIs as well (e.g., Bing)