My 85-year-old Dad uses the powered by Google search box on amazon.com, instead of google.com, because it "lets you enter more text". I didn't understand what

My 85-year-old Dad uses the powered by Google search box on amazon.com, instead of google.com, because it "lets you enter more text". I didn't understand what he meant, so I watched him use it. On google.com, in Chrome, when he starts typing in the search box, focus jumps to the address bar. The problem is that the address bar font is too small -- he's magnified the page content, but not the browser GUI.