Fast, intelligent, and fully customizable search for your site. Comes with detailed analytics and controls in the Swiftype Dashboard.
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This is usually caused by your theme not using
query_posts properly and affecting search as a result. Fortunately, it is easy to fix the search results.
You can install the plugin for each site with its own search engine, but we don't have a way yet to index an entire Multisite network yet. But stay tuned!