Perhaps you should try some spelling variations:
"retail business hours" » "retail businesses hours", "rural business hours", "central business hours"
"basic business books" » "bass business books", "asia business books", "based business books", "basic business book", "basic business handbooks", "basic business yearbooks"
"mail business costs" » "mail business cases", "mail business customs", "mail business case", "small business costs", "small businesses costs"

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