Mine works on a Google search, wildwood.
On the right hand side of the Chrome webpage there is three blue horizontal lines. If I hover my mouse over them it says [Customize and control Google Chrome]. Click on it and it brings up a sub-menu. Scroll down to SETTINGS and click on it. Scroll down that page and you should come across a piece of text that should say
Set which search engine is used when searching from the omnibox.
Underneath is the pull-down menu that has Google, Wikipedia and other search engine types.
Does this help?