Hi Ernest, searching using double quotes to delimit a text string is not working for me. If I search without using double quotes, e.g. >>Miss White<<, both terms are searched for and a number of results retrieved, see MissWhite.jpg below, which shows one result where the two search terms are definitely adjacent.
If I put the search terms in double quotes e.g. >>”Miss White”<< no results are returned as in the doublequotesearch.jpg image below. The contents of the search phrase field seem to suggest that the whole phrase, including the quotes is being searched for.
Strangely if the quoted phrase is part of a taxonomy term assigned to a page, the result is returned as expected.
The plugin is at 4.27.3, so includes the fix for the earlier double quote issue.