I believe Google used to (probably still has) some way to submit a website as a business, with an address and everything. That way when people search for your specific product, it will also show nearby local results.
google (and google plus) still dominates the search engine, so whether it local, national, or international, i think it will show the same result...
i don't have any idea about google plus. Mostly i used only google to search any thing. Through google you can search any thing.
google+ is not search engine.it is a social media network which is launched by google.if you want to search anythings than go to google.