Perhaps you should try some spelling variations:
"based businesses firm" » "based business firm", "owned businesses firm", "new businesses firm", "based businesses from", "based business firms", "based businesses dsm"
"basic business books" » "bass business books", "asia business books", "based business books", "basic business book", "basic business handbooks", "basic business yearbooks"
"gas business hours" » "sas business hours", "bass business hours"

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 books") or ((("based businesses firm") or ("gas business hours"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("basic business books") OR ((("based businesses firm") OR ("gas business hours")))).
• Removing quotes may allow a broader search: (( basic business books ) or ((( based businesses firm ) or ( gas business hours )))).
• Adding a wildcard symbol may retrieve word variants: (("basic business books") or ((("based businesses firm") or ("gas business hours"))))*.