Perhaps you should try some spelling variations:
"basic business costs" » "bass business costs", "asia business costs", "based business costs", "basic business cases", "basic business customs", "basic business case"
"mail business books" » "mail business book", "mail business handbooks", "mail business yearbooks", "small business books", "retail business books", "small businesses books"
"gas business costs" » "gas business cases", "gas business customs", "gas business case", "sas business costs", "bass business costs"

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

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