Findings:

• Doo Dah Parade
• Chun Doo Hwan
• Scooby-Doo ending
• scrappy doo (user)
• Scooby Doo
• lil doo (user)
• Scoobi Doo (user)
• dicky doo (user)
• Dah (user)
• Fus Ro Dah
• Scrappy-Doo
• Scooby Doobie Doo!
• Yabba dabba doo
• Musha ring dum a doo dum a da
• Doo
• doo (user)
• doo doo boy
• doo boo
• Doo Rag
• Humpty Doo
• The Scooby Doo Show
• Christy Doo (user)

If you Log in you could create a "zippity doo dah" node. If you don't already have an account, you can register here.