When stemming is enabled for a Latin1 language, a search on a given term (T) can produce one or more of these results:
Literal matches: Any occurrence of T always produce a match.
Stem form matches: Matches occur on the stem form of T (assuming that T is not a stem form). For example, if T is children, then child (the stem form) also matches.
Inflected form matches: Matches occur on all inflected forms of the stem form of T. For example, if T is the verb ran (as in This horse ran in the Kentucky Derby), then matches include the stem form (run) and inflected forms (such as runs and running). (Note that the Latin 1 analyzer does not by default support stemming for inflected English verb forms. For information about how to customized the wordforms file to support stemming for English verb forms, see Supplementing the default static stemming dictionaries (Latin 1).)
The order of the returned results depends on the sorting configuration:
If relevance ranking is enabled and the Interpreted (interp) module is used, literal matches will always have higher priority than stem form and inflected form matches.
If relevance ranking is not enabled but you have set a record sort order, the results will come back in that sort order.
If relevance ranking is not enabled and there is no record sort order, the order of the results is completely arbitrary.