Perhaps you should try some spelling variations:
"retail business costs" » "retail businesses costs", "rural business costs", "mail business costs", "retail business customs", "retail business case", "retail business centers"
"family business costs" » "family business customs", "family business case", "family business centers"
"family business cases" » "family business case", "family business cycles", "family business licenses"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("retail business costs") or ((("family business costs") OR ("family business cases"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("retail business costs") OR ((("family business costs") OR ("family business cases")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"retail business costs\") or (((\"family business costs\") OR (\"family business cases\"))))".
• Removing quotes may allow a broader search: (( retail business costs ) or ((( family business costs ) OR ( family business cases )))).
• Adding a wildcard symbol may retrieve word variants: (("retail business costs") or ((("family business costs") OR ("family business cases"))))*.