Findings:

• Sphinx
• The Sphinx
• Jackdaws love my big sphinx of quartz
• Riddle of the Sphinx
• sphinx (user)
• Lady Sphinx (user)
• Wild Cherry sphinx
• sphinxs (user)
• White Lined Sphinx
• sphinxx (user)
• Sphinx moth

If you Log in you could create a "The Ribbentrop-Richthoven Sphinx" node. If you don't already have an account, you can register here.