Perhaps you should try some spelling variations:
"motet" » "lotet", "monet", "moret", "movet", "motst"
"motets" » "lotets", "monets", "morets", "movets", "motsts"
"mote" » "more", "move", "mots"
"motte" » "mitte"
"mode" » "more"

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