Perhaps you should try some spelling variations:
"retail businesses costs" » "rural businesses costs", "small businesses costs", "local businesses costs", "retail businesses across", "retail business costa", "retail businesses common"
"gas business costs" » "gas business cases", "gas business customs", "gas business centers", "sas business costs", "bass business costs"
"mail business case" » "small business case", "retail business case", "small businesses case", "mail business cycle", "mail business climate"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("gas business costs") OR ("mail business case"))) OR ("retail businesses costs"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"gas business costs\") OR (\"mail business case\"))) OR (\"retail businesses costs\"))".
• Removing quotes may allow a broader search: (((( gas business costs ) OR ( mail business case ))) OR ( retail businesses costs )).
• Adding a wildcard symbol may retrieve word variants: (((("gas business costs") OR ("mail business case"))) OR ("retail businesses costs"))*.