Windows 10 mobile best match search

[driver80uk]

Hi there, wondering if anyone can help. I have a lumia 640 with the windows 10 update which I really like apart from one slight annoyance. When using the search shortcut to bring up cortana, if I type in what I want to search for it will offer a 'best match'. What I find is that by default when I press return, it will change what I have typed to whatever the best match is, so quite often I don't actually search for what I want. I know on the screen itself it offers the two options between best match and what I've typed but I'm so used to just pressing return after typing my search criteria I am quite often searching for the wrong thing. Is there a way of changing it so it doesn't automatically change to the best match?