Perhaps you should try some spelling variations:
"a fifty-minute series books" » "a fifty-minute bodies books", "a fifty-minute survey books", "a fifty-minute series bones", "a fifty-minute server books", "a fifty-minute sheriffs books", "_ fifty-minute series books", "a fifth-minute series books"
"a fifty-minute period block" » "a fifty-acute period block", "a fifty-minute region block", "a fifty-minute period black", "a fifty-minute period clock", "a fifty-minute period blood", "_ fifty-minute period block", "a fifth-minute period block"

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