Also interesting that searching {+cake central} or {cake +central} instead of {cake central}, the first result is the correct one.
I thought that the "+" just disabled the spelling/synonym/etc... alterations, while apparently in this query it does some kind of post-filtering for exact matches... (since both words do not appear in the page)
+ historically means "Do not give me any pages that don't contain this word." This used to be very important back when search engines were stupid, and basically ranked on the sum total number of occurrences of each term in the search. Searches for multiple terms would frequently be dominated by results that mentioned one of the terms many times.
I thought that the "+" just disabled the spelling/synonym/etc... alterations, while apparently in this query it does some kind of post-filtering for exact matches... (since both words do not appear in the page)