Search for [Pure One Mini] (pure is the manufacturer, one mini is the product name, of a DABS portable radio.) you get a bunch of results that just aren't relevant. You get accessories for this device, you get accessories for other devices from this manufacturer, you get other devices from this manufacturer, you get devices and accessories from other manufacturers. You have to use the side bar to restrict the products to those from Pure. But you still get all the Pure product line, and there's no way to further restrict the selection.

Back when people were still selling the Sansa Fuze: Search for eg [sansa fuze 8GB] then sort by price. You get dozens of pages of cases, then leads, then chargers for the sansa fuze. And Amazon's next page only allows you to advance by single pages, you can't jump forward by 5 pages at a time.

Search for [microwave oven], chose a department, and search by price, and you'll get a billion things that can be used with a microwave oven (timers, cookware, books) and then actual microwave ovens. You have to do further refinement using the side bar.