Perhaps you should try some spelling variations:
"alan guides for the busy libraries." » "plan guides for the busy libraries.", "alan guide for the busy libraries.", "alan guides for the bus libraries.", "alan guides for the buy libraries.", "alan guides for the bust libraries."
"alan guides for the busy librarians." » "plan guides for the busy librarians.", "alan guide for the busy librarians.", "alan guides for the bus librarians.", "alan guides for the buy librarians.", "alan guides for the bust librarians."

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: (("alan guides for the busy libraries.") OR ("alan guides for the busy librarians."))~.
• Removing quotes may allow a broader search: (( alan guides for the busy libraries. ) or ( alan guides for the busy librarians. ))~.
• Adding a wildcard symbol may retrieve word variants: (("alan guides for the busy libraries.") or ("alan guides for the busy librarians."))*.