My issue is the same as the one posted in this StackExchange link
. We need the search bar to return results from any topic. This should be the default behavior, with an option to constrain results to a particular subtopic.
Customers doing a second search don't realize the new search will return only results from the subtopic they're in. If the article they need isn't in that subtopic, it looks as if we have no article on the subject, and it isn't instinctive to click the Home icon before beginning a new search.