container = containers[0]
product_container = container.find_all('div',{'class': 's-item-container'})
product_name = product_container.find_all('div', {'class': 'a-fixed-left-grid-col'})
print (product_name)

soup.find_all('tag', {'class': 'classname1 classname2 ...'})

soup.find_all('tag', {'class': ['class1', 'class2']})