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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("mail business cases") or ("basic business case"))) or ("retail business hours"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mail business cases") OR ("basic business case"))) OR ("retail business hours")).
• Removing quotes may allow a broader search: (((( mail business cases ) or ( basic business case ))) or ( retail business hours )).
• Adding a wildcard symbol may retrieve word variants: (((("mail business cases") or ("basic business case"))) or ("retail business hours"))*.