I would like to be able to add additional context to my search query when using the reverse image search. Specifically, when I upload an image, I would like to be able to insert text in the search box too, to refine the search results for image that not only visually match my query, but also contain relevant keywords.
Sometimes, just visual similarity alone is not a good indicator for a good result. Reverse image search can be useful to find more detail about an image, but if the image is too generic for it to match what you're looking for, providing extra context may help surface more relevant results.
As far as I can tell, Google and Bing do not currently implement this feature. Yandex Search does.