On Alamy, make sure you have enough keywords (50) and fill in all of the criteria so that your images have good or optimized visibility.
Please, please don't put 50 keywords in unless they are really necessary for your image.
Otherwise, you've got optimised visibility for irrelevant terms, which won't help you and will just p*ss off buyers.
It's one of these very peculiar things Alamy introduces from time to time with no real logic or explanation; and this one is inevitably causing a LOT of irrelevant searches.
There's been a lot of discussion of this over on their forum. No one can see how 50 keywords, unless relevant, is a good idea.