Right click "search with Trovi" error.

When I do right click on a selected word or text, an option called "Search With Trovi" appears, as in the following screenshot:

A while ago, the adware Trovi had changed the default browser in my browsers (Safari, Firefox, Chrome), but I no longer have that problem and this option is still on my computer. When I search Trovi in my computer, nothing appears.

Despite of that, in System Preferences > Keyboard > Shortcuts > Services > Searching, there is a box "Search With Trovi", no need to say, I uncheck the box without any change.

Any help will be appreciated.