@leocg
There was an entry from Yahoo which i removed (I never use it).
If I type "y/ text" it's going to search "text" on yahoo, so appears like y/ is a shortcut to that search engine, but it wasn't there until i typed it by mistake.
I've search through options to maybe turn it off or smth but nothing like that is there. Tried searching this forum but haven't found similar case. Someone was suggesting editing database in user profile, but all I could edit was autocomplete entries, nothing related to search bar.