The API won't provide more than ~500 search results for any arbitrary query. It's by design. Technically, it means that the nextPageToken
field won't be returned once you hit ~500 results. No additional parameter can change that.
If you want more than ~500 results for a query, you have to split it into more specific sub-queries. I'd suggest using the publishedAfter
and publishedBefore
parameters to achieve that, but feel free to experiment with the other ones here.