Why is Google not displaying the correct title of my web page on its search results?
Some times Google does not display the right title of the web page in its search listings. It does not mean that Google has not indexed your website. If you look at the Google cache of your web page you will see that it has indexed the page with the correct title.
This usually happens when Google feels that the page title is not descriptive enough of the content being presented on the web page. It also takes information from Dmoz however this depends whether your website is listed there or not. If it is listed on Dmoz then please add the following tag in the <head> section of your web page.
<meta name=”robots” content=”NOODP”>
This will tell Googlebot and other robots to ignore content from Dmoz and only use the title of the web page for display in it’s search listings.
You can read more on this on Google Site title and description
Hope the above helped!