Perhaps you should try some spelling variations:
"wikt:interlude" » "witt:interlude", "wit:interlude", "wik:interlude", "wikt:interludio"
"whit:interlude" » "whit:interludio", "white:interlude", "what:interlude"
"pitt:interlude" » "pitt:interludio", "pict:interlude"
"whitt:intermedio" » "whitet:intermedio", "whatt:intermedio", "whitty:intermedio", "white:intermedio", "witt:intermedio"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("wikt:interlude" OR "whit:interlude") OR ("pitt:interlude" OR "whitt:intermedio"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"wikt:interlude\" OR \"whit:interlude\") OR (\"pitt:interlude\" OR \"whitt:intermedio\"))*".
• Removing quotes may allow a broader search: (( wikt:interlude OR whit:interlude ) OR ( pitt:interlude OR whitt:intermedio ))*.