When stemming is turned off by placing a word in double quotes, the pages are correctly listed, but on the search results page stems in the snippet are still indicated in bold. This only happens when trying to turn of stemming of a base-word.
Matching works perfectly when turning off stemming for the word that is not a base word.
For example searching for `"cloud"` (in quotation marks) shows **cloud clouded** and **clouds **when those other terms are in the snippet. But searching for `"clouds"` shows cloud clouded and **clouds**, as it should.
Trial and error work is required to develop the CirrusSearch documentation, and so for that reason the **match ** //must be correct//, for it is the only authority possible to cite in the burgeoning CirrusSearch documentation, (except for Phabricator of course), because the Help page and its talk page of CirrusSearch are largely vacant.