WordPress.org

The default WordPress search is limited because it doesn't give you results based on the title or content of the post, but by date.

Better Search replaces the default WordPress search engine with a more powerful search engine. Visitors will find more relevant search results of search terms. You can fine tune results by giving the title or the content more weighting.

Better Search supports templates for perfect integration into your blog template. Template for Twenty Eleven theme included in the package.

Additionally, the plugin will track the searches and allow you to present a "search heatmap" of the most popular searches. Support for WordPress widgets will allow you to easily add this heatmap to your theme's sidebar or footer.

Features

• Automatically replaces your default WordPress search with Better Search results
• Search results sorted by relevance. You can also include pages and attachments in the search results
• Fine tune results by changing the weighting of post title and post content
• Option to turn off relevancy based matching. This will sort results by date
• Display a list of popular search terms (daily and overall) on your blog in the form of a heatmap
• Support for a template file for perfect integration into your blog template
• Clean uninstall if you choose to delete the plugin from within WP-Admin
• Works with caching plugins like WP-Super-Cache and W3 Total Cache