SearchWP is a powerful custom search plugin for WordPress. It is very easy to use and the search results are relatively more accurate.
It allows searches for your keyword in post/page title, content, slug, categories, tags, taxonomies, excerpt and even comments. You can control the algorithm by assigning weight to each content type from 1 to 10 where 10 being the highest.
Upon activation, the plugin automatically indexes your content and replaces the default search feature in WordPress.
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