Magento CMS & nBlog Integrated Search extension includes your nBlog blog posts and Magento CMS pages. This extension is useful to make your store more interactive and reduces user bounce rate. 


After install extension go to System -> Index Management .
In Index Management check “Rebuild nBlog fulltext search index” click “Reindex Data”

if you are not install the supported magento extension nBlog,Samdoit_Portfolio the Search Setting
are look like the following image.

After install the supported extension (nblog,samdoit_portfolio) the setting will be look like the following image.