You can simply install the plugin via Plugin Manager.
After the installation you can configure the plugin in order to choose whether you want a category and/or shop and support pages search.
Note, that for same shop pages which have different languages, you need to specify a shop for them (backend->content->forms->edit form->limit to shop ), if you do not want them to be shown in the search.
1. Fixed issue regarding Seo Category urls.
2. Compatibility with 5.4 version
Improved performance, and bug fixes
This is the first version of the plugin