I had naively assumed that I could search with British or US spelling and all the results from both queries would be returned. However, I was searching my library today for "empathise" and found just 26 results. When I search for empathize, it returns 718 (different) hits. (My search was more complex but when I got no meaningful results I tried just this word).
Is this the intended behaviour of the software? If so, is it worth going to uservoice and making a suggestion to return all results for a word whether it is printed by a British publisher or an American one?
Colin