Actually, it could become a problem. If you include quotes, it searches for that exact phrase. That will help when you're doing movie titles. For instance, if the title was "About A Boy" and you did it without quotes. A website with the sentence, "This is A story ABOUT three women who attempted to help this little BOY with school." will qualify because without quotes... it searches in any order. Secondly, that trick you did helps for keywords without special characters such as " , ? ! & % #... etc. When you include special characters, Google will add special text instead. That's why I was showing you that. Yes, it may be a pain in the butt having to do a bit more work, but that's what we sometimes gotta do to get exactly what we want or to get better results.
I did a search for "about a boy" with and without quotes. Without quotes, I got 3 out of 10 results relating to that movie. With quotes, I got 9 movie and 1 book results relating to that movie. Since the movie is 2 years old, a lot of sites become outdated and the results don't exactly show up the way you want it.
I did a search for "along came polly" with and without quotes. Without and with quotes, I got 10 out of 10 results relating to that movie. This is because the movie is recent and everyone is talking about it. A few months later, results will drop out or be outdated... meaning, if you don't use quotes... you'll get less results than with quotes.
Of course, that's up to you. This method I did is what I would use cuz I'm sometimes picky when it comes to information.