Install unity-scope-openclipart by entering the following commands in the terminal:
sudo apt update sudo apt install unity-scope-openclipart
Description:
OpenClipArt scope for Unity
This package contains the "openclipart" scope which allows Unity to search for clip art from openclipart.org.
Homepage: https://launchpad.net/unity-scope-openclipart
Version: 0.1+13.10.20130723-0ubuntu1
Section: universe/gnome