Perhaps you should try some spelling variations:
"basic business case" » "big business case", "gas business case", "based businesses case", "basic business cycle", "basic business climate"
"mail business costs" » "mail business hours", "mail business centers", "small business costs", "family business costs", "retail business costs"
"mail business cases" » "mail business cycles", "mail business licenses", "mail business climates", "small business cases", "family business cases", "retail business cases"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("basic business case") or ((("mail business costs") OR ("mail business cases"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basic business case") OR ((("mail business costs") OR ("mail business cases")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"basic business case\") or (((\"mail business costs\") OR (\"mail business cases\"))))".
• Removing quotes may allow a broader search: (( basic business case ) or ((( mail business costs ) OR ( mail business cases )))).
• Adding a wildcard symbol may retrieve word variants: (("basic business case") or ((("mail business costs") OR ("mail business cases"))))*.