wowpress.host

Default WordPress search result pages are often slow and results they show are often not relevant. This plugin use specially designed Search Engine software for that purpose, which gives you both speed and relevance.
Useful when:
<ul>
<li>You need your search results to be fast</li>
<li>better accuracy for search results required</li>
<li>natural language constructs has to be understood (search for “galaxy” has to return pages containing “galaxies” word)</li>
<li>drop-in replacement of existing search result pages – no adjustments in theme code required</li>
</ul>
At <a href="https://wowpress.host/" rel="nofollow ugc">WowPress.host</a> company we often face situation when search results pages at websites we manage are extremely slow, or search results you get are not relevant. Search pages traffic may even affect whole website stability by taking all SQL server resources. 
That happens because WordPress use SQL queries to perform the search but MySQL is not designed for that. There is only one working solution to prevent search slowness – use specially designed Search Engine server software written exactly for that purpose, and this plugin allows you to do that. 
This plugin supports ElasticSearch engine to perform search requests, and our service available in every hosting environment. 
Keep in mind that some technical knowledge required to set up and maintain ElasticSearch server software, also it’s not possible to install it on every hosting environment so we do offer our Managed service available for everyone.
While we offer our search solutions to our customers for awhile with a lot of success, we decided to publish some basic solution to the community for free since we use a lot of open-source tools in our work too. Hope it will help you.
<h4>Need Help? Found A Bug? Want To Contribute Code?</h4>
Support for this plugin is provided via the <a href="https://wordpress.org/support/plugin/wow-fulltext-search" rel="ugc">WordPress.org forums</a>.
The source code for this plugin is available on <a href="https://github.com/wowpress-host/wow-fulltext-search" rel="nofollow ugc">GitHub</a>.
Need adjustment for your specific theme/plugin needs? 
Paid support at <a href="https://wowpress.host/professional-services/" rel="nofollow ugc">WowPress.host</a>.

Wow FullText Search

Fast fulltext search provided by Search Engine software replacing default WordPress functionality.

ishitaka

Replaces site search with full-text search.
Replace the site search from LIKE search to Japanese full-text search (MySQL + Ngram parser or Mroonga engine + TokenMecab parser). This will significantly improve search performance.
Search for pure strings (plain text) without HTML tags. This will prevent HTML tags from being searched.
The data (index) for searching is stored in a dedicated table. It does not rewrite existing table structures or post data (posts table).
Searches for text in PDF, Word (doc, docx), Excel, and PowerPoint files. Secured PDF file are currently not supported.
It supports WordPress multisite.
<h4>Search string options</h4>
<ul>
<li><code>OR</code> (uppercase letter) – Combine searches. Example: foo OR bar</li>
<li><code>-</code> – Exclude words from the search. Example: foo -bar</li>
<li><code>""</code> – Search for an exact match. Example: “foo bar”</li>
<li><code>*</code> – Search by wildcard. Mroonga only. Example: foo*</li>
<li><code>()</code> – Grouping. Mroonga only. Example: (foo OR bar) baz</li>
</ul>
<h4>Operating environment</h4>
Requires MySQL 5.6 or later, or Mroonga engine.
Mroonga engine is strongly recommended. InnoDB engine performs significantly worse with large amounts of data.

Full-Text Search

Replaces site search with full-text search.

Wow FullText Search vs Full-Text Search