Finding sketched icons

I'm searching for sketched shapes - arrows, squares, ovals. Solid simple ones and box-shaped with pencil filling, etc. Are there any tricks for finding them in the Storyline 'Search Icons'? 'Oval sketch' and 'oval hand-drawn' come up blank. For the last slide I ended up searching on Google and Pixabay, but with so many articulate icons in the library, is there a better way?

Thanks