Perhaps you should try some spelling variations:
"a fifty-minute series book" » "a fifty-minute bodies book", "a fifty-minute period book", "a fifty-minute survey book", "a fifty-minute series books", "a fifty-minute services book", "a fifty-minute stories book", "_ fifty-minute series book", "a fifth-minute series book"
"A Fifty-minute series block" » "A Fifty-minute bodies block", "A Fifty-minute period block", "A Fifty-minute survey block", "A Fifty-minute stripes block", "A Fifty-minute serial block", "A Fifty-minute series stock"
"A Fifty-minute series back" » "A Fifty-minute bodies back", "A Fifty-minute period back", "A Fifty-minute survey back", "A Fifty-minute services back", "A Fifty-minute series basics", "A Fifty-minute series based"

Try widening your search to All Fields.

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: (("a fifty-minute series book") OR ((("A Fifty-minute series block") OR ("A Fifty-minute series back")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"a fifty-minute series book\") or (((\"A Fifty-minute series block\") OR (\"A Fifty-minute series back\"))))".
• Removing quotes may allow a broader search: (( a fifty-minute series book ) or ((( A Fifty-minute series block ) OR ( A Fifty-minute series back )))).
• Adding a wildcard symbol may retrieve word variants: (("a fifty-minute series book") or ((("A Fifty-minute series block") OR ("A Fifty-minute series back"))))*.