I am using SharePoint 2013 on-prem. We want to boost the relevance of some items tagged with certain tags in the search results. For that I have configured the standard search results web part.
I am using XRANK for this purpose, and that works fine when I query from a single content source. When I query from multiple content sources it does not work.
ContentSource: XX XRANK(cb=5000,00) term:<guid>
This doesn't work
ContentSource: XX OR ContentSource: YY OR ContentSource: ZZ XRANK(cb=5000,00) term:<guid>
XX crawls one web application, YY crawls another and ZZ another, but they are all in the same farm and accessible by search. All the web-applications have content which is tagged with the term in question here.
Any ideas what I am doin wrong here ?