SearchWP Fuzzy Matches - WordPress Plugin
Fuzzy matching aims to make SearchWP a bit more lenient with search queries. Use this extension to include search terms that are close in spelling to terms within your index. There are some filters available for this Extension that let you fine-tune how loose the fuzziness is.
Plugin Features
Using Fuzzy Matches is recommended only in circumstances that deem it necessary. This warning is given because Fuzzy Matches essentially reduces the effectiveness of SearchWP’s algorithm. Fuzzy Matches broadens search terms which can essentially bring in unwanted results.