Perhaps you should try some spelling variations:
"a fifty-minute series book" » "a fifty-minute prices book", "a fifty-minute survey book", "a fifty-minute series books", "a fifty-minute services book", "a fifty-minute stories book", "a fifth-minute series book"
"a fifty-minute series block" » "a fifty-minute prices block", "a fifty-minute survey block", "a fifty-minute stripes block", "a fifty-minute serial block", "a fifty-minute verses block", "a fifth-minute series block"
"a fifty-minute series stock" » "a fifty-minute prices stock", "a fifty-minute survey stock", "a fifty-minute services stock", "a fifty-minute series stops", "a fifty-minute fisheries stock", "a fifth-minute series stock"
"a fifty-minute series back" » "a fifty-minute prices back", "a fifty-minute survey back", "a fifty-minute services back", "a fifty-minute series basics", "a fifty-minute series based", "a fifth-minute series back"
"a fifty-minute bodies block" » "a fifty-finite bodies block", "a fifty-minute books block", "a fifty-minute bodies black", "a fifty-minute bodies back", "a fifty-minute bodies locke", "a fifth-minute bodies block"
"a fifty-minute period back" » "a fifty-acute period back", "a fifty-minute region back", "a fifty-minute period black", "a fifty-minute period batch", "a fifty-minute period bart", "a fifth-minute period back"
"_ fifty-minute period back" » "_ fifty-acute period back", "_ fifty-minute region back", "_ fifty-minute period black", "_ fifty-minute period batch", "_ fifty-minute period bart", "_ fifth-minute period back"

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 bodies block"))) OR ("a fifty-minute series stock"))) OR ((("a fifty-minute series back") OR ((("a fifty-minute period back") OR ("_ fifty-minute period 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 bodies block\"))) or (\"a fifty-minute series stock\"))) or (((\"a fifty-minute series back\") or (((\"a fifty-minute period back\") OR (\"_ fifty-minute period back\"))))))))".
• Removing quotes may allow a broader search: (( a fifty-minute series book ) or ((((((( a fifty-minute series block ) or ( a fifty-minute bodies block ))) or ( a fifty-minute series stock ))) or ((( a fifty-minute series back ) or ((( a fifty-minute period back ) OR ( _ fifty-minute period back )))))))).
• Adding a wildcard symbol may retrieve word variants: (("a fifty-minute series book") or ((((((("a fifty-minute series block") or ("a fifty-minute bodies block"))) or ("a fifty-minute series stock"))) or ((("a fifty-minute series back") or ((("a fifty-minute period back") OR ("_ fifty-minute period back"))))))))*.