Perhaps you should try some spelling variations:
"alan guides for the busy librarians." » "alan guides for the busy librarian.", "alan guides for the usa librarians.", "alan guides for the gay librarians.", "ala guides for the busy librarians.", "plan guides for the busy librarians."
"plan guide for the bus libraries." » "plan guide for the bac libraries.", "plan guide for the busy librarian.", "plan guide for the _ libraries.", "plan guides for the bus libraries.", "can guide for the bus libraries."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("alan guides for the busy librarians.") or ("plan guide for the bus libraries."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("alan guides for the busy librarians.") OR ("plan guide for the bus libraries.")).
• Removing quotes may allow a broader search: (( alan guides for the busy librarians. ) or ( plan guide for the bus libraries. )).
• Adding a wildcard symbol may retrieve word variants: (("alan guides for the busy librarians.") or ("plan guide for the bus libraries."))*.