The range of Google is great, far better than the limited Bing or DuckDuckGo (which is actually mostly Bing, with a bit of Yandex). But at Google Search you can find yourself getting tangled up in all the bot-generated spam-and-scam pages that Google seems happy to permit in the index. The above search box is a handy filter on that, which guards you against spam-and-scams. You’re still searching Google, but only those sites that are going to be both genuine and relevant.