The way search is working is excellent for the english language where you split compound words. In e.g. danish or german compound words are written without a space between them which complicates search. Solr Query Modification rewrites the query string with wildcards and fuzzy indicators before it is sent to solr. You can configure the rewrites with the modifications you want.
The module is very simple and is not doing anything you cannot do by hooking into Search API solr search.
Prevent individual nodes and user account from ever showing up in Drupal core search results. This module adds a checkbox on each node and user that allows you to exclude them from search results. This module does not override node access, so excluded content will still continue to function as normal on all other areas of the site.