Google's results vary due to many factors. The same search back to back can yield different results!
Here are some of the common reasons why Google's results can be different for people using same exact search terms:
No, I find my site, but my site info is wrong.
Google also uses a cache system, so you may just need to wait.
Read more about how Google really works.
Hint: You can set your title and description meta-tags, and search engines might choose to use them.