To search for an exact term, prefix the term with "=".
This ensures that the term will not be tokenized, therefore you can search
for stop words.
If both FTS and ID base search are supported for a specified or implied property, then exact matching will be used where possible.
=running
Will match "running" but will not be tokenized. If you are using stemming it might not match anything.
For the cm:name field, which is in the index as both tokenized and untokized, it will use the untokenized field. For example, =part will only match the exact term "part". If you use =part* it will match additional terms, like "partners". If there is no untokenized field in the index, it will fall back to use the tokenized field, and then, with stemming/plurals, it would match.