Ask HN: General purpose search engine that will respect special characters?

I am not a native English speaker, so excuse any errors. I'm looking for a general purpose search engine that will strictly respect queries with special characters (like !, -, +, #, ?) and won't strip them or treat them as operators. I don't want a search engine that only indexes code, like Grep App. I'd sometimes use Symbolhound in the past, but it has been discontinued. Suggest an alternative. Thanks in advance.