Perhaps you should try some spelling variations:
"motet" » "lotet", "monet", "moret", "modet", "movet", "motst"
"motets" » "lotets", "monets", "morets", "modets", "movets", "motsts"
"mottet" » "mottets", "mouttet", "cottet", "mittet"
"motte" » "mitte"
"mote" » "mode", "move", "mots"
"motes" » "modes", "moves", "motss", "moses"

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 ("mottet" OR "motte")) OR ("mote" OR "more")) OR (("motets" OR "motes") OR "notes")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((\"motet\" or (\"mottet\" OR \"motte\")) or (\"mote\" or \"more\")) or ((\"motets\" or \"motes\") or \"notes\"))".
• Removing quotes may allow a broader search: ((( motet or ( mottet OR motte )) or ( mote or more )) or (( motets or motes ) or notes )).
• Adding a wildcard symbol may retrieve word variants: ((("motet" or ("mottet" OR "motte")) or ("mote" or "more")) or (("motets" or "motes") or "notes"))*.