In my experience, Omnibar is giving me worse and worse results. sergiotapia's example mirriors my experience lately. That said, Omnibar in Incognito Mode works

In my experience, Omnibar is giving me worse and worse results. sergiotapia's example mirriors my experience lately. That said, Omnibar in Incognito Mode works well, because it only searches my history (which is what I want). Edit: chrome://history is pretty cool, too.