Re: It's useful. (Unlike most must-have tech)
"Well, you should be able to ask any search engine for exact search terms and exclusions and actually get a result on that basis."
And back in the 1980s you could so there's no good reason why you shouldn't now.
Part of the reason that you can't may well be to sell you advertising. The other part might be that the providers of such engines don't like the idea of failing to produce a response hence, apart from advertising, your results might be a load of irrelevant nonsense.