Perhaps you should try some spelling variations:
"Short guides to business partner series." » "Short guides to business partners series.", "Short guides to business owner series.", "Short guides to business paper series.", "Short guides to business matter series.", "Short guides to business partner cities."
"short guides to business case series." » "short guides to business cycle series.", "short guides to business climate series.", "short guide to business case series.", "short guides to business care series.", "short guides to business cass series.", "short guides to business case stories."

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: (("short guides to business case series.") OR ("Short guides to business partner series."))~.
• Removing quotes may allow a broader search: (( short guides to business case series. ) or ( Short guides to business partner series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("short guides to business case series.") or ("Short guides to business partner series."))*.