Perhaps you should try some spelling variations:
"motet" » "lotet", "monet", "moret", "mottet", "modet"
"motets" » "lotets", "monets", "morets", "mottets", "modets"
"modet" » "modetn", "model", "mode"
"mote" » "motte", "more", "mode"
"motes" » "mottes", "mores", "modes", "notes", "moves"

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 "modet") OR "mote") OR ("motes" OR "motets")).
• Removing quotes may allow a broader search: ((( motet or modet ) or mote ) or ( motes or motets )).
• Adding a wildcard symbol may retrieve word variants: ((("motet" or "modet") or "mote") or ("motes" or "motets"))*.