If you entered the your income and other data correctly then the calculated tax would be correct. Getting a small or no refund is not really a bad thing, since it means that you didn't withhold more for taxes during the year than necessary. therefore leaving more money in your pocket. Why have the Treasury hold your money during the year rather than holding it yourself?
Answers are correct to the best of my ability but do not constitute legal or tax advice.
**If this post is helpful please click on "thumbs up"**