Perhaps you should try some spelling variations:
"retail businesses books" » "rural businesses books", "small businesses books", "local businesses books", "retail business books", "retail business book", "retail business yearbooks"
"basic business case" » "bass business case", "asia business case", "based business case", "basic business cycle", "basic business climate"
"mail business case" » "mail business cycle", "mail business climate", "small business case", "retail business case", "small businesses case"

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