Brandon Himpfen

Better WP Search improves the default WordPress search functionality currently in two ways:
<ol>
<li>If there is only one search result, redirect to that post; and</li>
<li>Replaces search URL from /?s=query to /search/query.</li>
</ol>
The plugin will offer more features in the future. If you have a suggestion? Use the plugin’s 
forum to make suggestions.

Better WP Search

Better WP Search improves the default WordPress search functionality.

Angel Costa

This plugin makes the url for the search results page look like https://site.com/search/keyword
Credit/Inspired by: <a href="https://wordpress.org/plugins/nice-search/" rel="ugc">Nice Search</a>

WP SEO Search

Very useful plugin.

Get cleaner and SEO friendly URLs for your WordPress search like /search/coding+tips instead of /?s=coding+tips

Better WP Search vs WP SEO Search