I’m Trying To Create Datasets For Different Facial Expressions

So far I’ve been using google image search, yandex image search, and some stock photo websites. But it seems to be really hard to find high quality images of people having facial expressions other than “default look” or “smiling”. For example, finding images of people with facial expression “biting lip” seems very difficult. I was hoping to get some ideas or pointers how I could do this more efficiently?