You can search for any retailer using the search bar at the top of the page.
If you can’t find Amazon, it may be because you're supporting a registered charity. Amazon does not allow donations to this type of cause. You can read more about this here: How Amazon works on easyfundraising.
If the retailer doesn’t appear in search, it’s likely that they’re not currently partnered with easyfundraising. Two common examples are IKEA and Next - purchases made with these retailers unfortunately won’t qualify for a donation.