When searching for the string "open* education*" selecting Anytime, Google Scholar returns as 4th result "Opening up education: A support framework for higher education institutions" of 2016. When searching for the string "open* education*" selecting as Custom Range 2016-2023, Google Scholar does not return this report. How is this possible?
Search results are different depending on who is logged in and other factors.
When I try your first search, I don't get that result on the first page. To ensure I get it on the first page, I added "support" as an additional search term, and then your result shows up as the first result. But also, when I try your second search plus "support," that paper still shows up as the first result.
So I think it's still returning your paper, just not on the first page.
Try navigating through the pages of results by clicking Next at the bottom.