Take advantage of these art search engines that help you narrow your search or pinpoint a piece of art by artist name, title of the work, the color of your wall, category and more...
If you have a general idea of what kind of art you're searching for, use this general art search engine. Replace the "monet" in the search box with any keyword that would describe what you want to find. Once you hit the "Go" button, on your left you can click on "filters" or links to further narrow your search. Examples of words you might use include giraffe, calla lily, apples, blue, buildings, etc. You're limited only by your imagination!
...a haystack?
pinpoint a piece of art by artist name, title of the work, the color of your wall, category and more...
Maybe you think you know part of the title of a specific piece or the artist's name. In such a case you can enter what you think you know about the title - a keyword or phrase - in the title box and the artists name in the artist's box. You can even enter something in just one of the boxes. For example, you might have seen van Gogh's Starry Night, but can't remember it was by van Gogh or the whole title, but you remember something about "starry." Just enter the word "starry" into the title box and hit the Go button. Voila...you'll find van Gogh's Starry Night. Try it!
A specific kind of art may be what you're interested in. In such a case you might try a category search using the drop down menu in this search box. You'll want to also view some of the popular collections others have searched on for the art on their walls.
Your main concern may be about matching or coordinating your art with your wall color rather than hanging art from any particular artist or art theme. If that's the case, follow the method outlined at the above link.