Perhaps you should try some spelling variations:
"gas business cases" » "gas business cycles", "gas business licenses", "gas business climates", "sas business cases", "bass business cases"
"based business costs" » "based businesses costs", "bass business costs", "owned business costs", "based business customs", "based business centers"
"based business case" » "based businesses case", "bass business case", "owned business case", "based business cycle", "based 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 cases") or ((("based business costs") OR ("based business case"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("gas business cases") OR ((("based business costs") OR ("based business case")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"gas business cases\") or (((\"based business costs\") OR (\"based business case\"))))".
• Removing quotes may allow a broader search: (( gas business cases ) or ((( based business costs ) OR ( based business case )))).
• Adding a wildcard symbol may retrieve word variants: (("gas business cases") or ((("based business costs") OR ("based business case"))))*.