At the 2019 annual joint meeting of the London and Kent Surrey and Sussex Searching and Training Forum, we were privileged to have a presentation from Tony Russell-Rose. Dr Russell-Rose demonstrated 2dSearch, which uses a two-dimensional canvas to allow the elements of an advanced search to be combined and manipulated, eliminating syntax errors, making query semantics more transparent, and offering a more effective way to optimize, save and share search strategies. 2dSearch is free to use. Sign up for an account.
Dr Russell-Rose kindly gave us his slides:
Reimagining Advanced Search [pdf]