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

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 ((("basic business costs") OR ("retail business case"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"basic business books\") OR (((\"basic business costs\") OR (\"retail business case\"))))".
• Removing quotes may allow a broader search: (( basic business books ) OR ((( basic business costs ) OR ( retail business case )))).
• Adding a wildcard symbol may retrieve word variants: (("basic business books") OR ((("basic business costs") OR ("retail business case"))))*.