To add an entire search result to an Album use the Add All to Album button.
This copies all the search result items to an Album whether the items
are visible on the search result page or not. You do not need to scroll
to the end of the search result if you use the Add All to Album button.
To add an entire search result to your basket or lightbox, scroll down to the end of the results and then Check all shown.
Adding an entire search result to your basket may not work sometimes because the basket has a limit, typically about 20 items.