Perhaps you should try some spelling variations:
"basic business case" » "big business case", "mail business case", "based businesses case", "basic business cycle", "basic business climate"
"basic business cases" » "big business cases", "mail business cases", "based businesses cases", "basic business costs", "basic business cycles", "basic business licenses", "basic business climates"
"gas business cases" » "gas business costs", "gas business cycles", "gas business licenses", "gas business climates", "a business cases", "mail business cases", "_ business cases"

Try widening your search to All Fields.

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