For long, I have always been confused about how word creates a hyphen in some places while it is just a short minus in other places. If you are wondering about the difference, the hyphen is usually longer than a minus in MS Word. Quite curious as I am, No one ever bothers about such small things as a hyphen so I have never searched about it anywhere. But recently I stumbled upon the solution.
It just so happens that when you add a minus plus a word after that and a space after the word, the minus becomes a hyphen when you hit space. It doesn’t matter if you have a space between the hyphen and the word though.
So if for some reason you don’t get the hyphen you probably must’ve hit Enter instead of space.