Perhaps you should try some spelling variations:
"retail businesses books" » "retail business books", "rural businesses books", "small businesses books"
"local business books" » "local business hours", "local business goals", "local business forms"
"mail business costs" » "mail business cases", "mail business case", "mail business hours", "small business costs", "family business costs", "retail business costs"

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

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