Perhaps you should try some spelling variations:
"friedman vulture funds" » "friedman rule funds", "friedman walter funds", "friedman venture funds", "friedman value funds"
"friedman culture found" » "german culture found", "african culture found", "friedman rule found", "friedman culture und", "friedman cultures around", "friedman culture 2nd"
"friedman venture fund" » "friedman venture funds", "friedman ventures fund", "friedman venture funding"

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: (("friedman venture fund") OR ((("friedman vulture funds") OR ("friedman culture found"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"friedman venture fund\") or (((\"friedman vulture funds\") OR (\"friedman culture found\"))))~".
• Removing quotes may allow a broader search: (( friedman venture fund ) or ((( friedman vulture funds ) OR ( friedman culture found ))))~.
• Adding a wildcard symbol may retrieve word variants: (("friedman venture fund") or ((("friedman vulture funds") OR ("friedman culture found"))))*.