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.
Note: Please read these notes before installing Fuzzy Matches
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.
It is recommended that you first monitor your actual search queries using SearchWP’s built-in statistics. Using this data you can evaluate what search terms are yielding zero results. The first step here would be to install Term Synonyms if these failed searches are due to common misspellings.
If there are too many common misspellings to make managing Term Synonyms feasible, then (and only then) would Fuzzy Matches be a recommended solution.
Set the minimum word length to include in fuzzy matches (default is 5)