1. A computer-implemented method comprising: receiving a first search query that includes one or more query terms that identify a viewpoint in which an object is to appear in images that are identified in response to the first search query; in response to receiving the first search query that includes one or more query terms that identify the viewpoint in which the object is to appear in images that are identified in response to the first search query, generating a second search query that includes (i) one or more query terms that refer to a category including the object, and (ii) one or more query terms that identify the viewpoint in which the object is to appear in images that are identified in response to the first search query; obtaining (i) a first set of one or more images that are identified as responsive to the first search query, and (ii) a second set of one or more images that are identified as responsive to the second search query; and selecting one or more of the images of the first set based at least on an indication of visual similarity between the selected one or more images and the one or more images of the second set of one or more images.