Hi Eden
Totara uses full text search across supported databases this allows for some flexibility but not for misspelling of words.
Potentially fuzzy text searching could be incorporated into the full text search using the database functions there is a performance cost to this.
There is also a global search engine which allows mor flexibility but there are drawbacks to this
Are you or you Partner able to create a feature request ticket as i can't see an existing one around this idea.
Regards