Scraping Bing with Scrapebox.

Has anybody else noticed scraping bing with Scrapebox isn't providing the correct amount of results via harvester? I'm trying to scrape tumblrs but I notice either a very small amount of results (usually around 10 or under) or 0. But if I manually search bing for the same keyword e.g "site:tumblr.com example" hundreds of thousands of results are there. Is there anything I can do to get the correct results? (The proxies work fine on bing manually)

Does anybody know how many threads I can…

Scraping Bing with Scrapebox.