Perhaps you should try some spelling variations:
"motet" » "lotet", "monet", "moret", "mottet", "modet"
"motets" » "lotets", "monets", "morets", "mottets", "modets"
"morel" » "morell", "model", "moral"
"mote" » "motte", "more", "mode"
"morets" » "moretus", "forets", "moreto"
"lotets" » "lotet", "lotes", "lotens"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((("motet" OR "morel") OR "mote") OR (("motets" OR "morets") OR "lotets")).
• Removing quotes may allow a broader search: ((( motet or morel ) or mote ) or (( motets or morets ) or lotets )).
• Adding a wildcard symbol may retrieve word variants: ((("motet" or "morel") or "mote") or (("motets" or "morets") or "lotets"))*.