DC 5.8 Elastic Search
Documentation on Elastic search operators -
https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-query-string-query.html
Particularly, the dash “-” is actually a NOT operator. So in a search, the word with the - in front of it must not be present in the search. So a name like Smith-Anderson in the title will be excluded from the search results as Anderson must not be present.