Perhaps you should try some spelling variations:
"witt:interlude" » "pitt:interlude", "witt:interludio"
"litt:interlude" » "litt:interludio", "pitt:interlude", "lita:interlude", "liut:interlude"
"wait:interlude" » "wait:interludio", "waite:interlude", "walt:interlude", "want:interlude"
"whit:interlude" » "whit:interludio", "white:interlude", "what:interlude"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("witt:interlude" OR "litt:interlude") OR ("wait:interlude" OR "whit:interlude"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"witt:interlude\" OR \"litt:interlude\") OR (\"wait:interlude\" OR \"whit:interlude\"))".
• Removing quotes may allow a broader search: (( witt:interlude OR litt:interlude ) OR ( wait:interlude OR whit:interlude )).
• Adding a wildcard symbol may retrieve word variants: (("witt:interlude" OR "litt:interlude") OR ("wait:interlude" OR "whit:interlude"))*.