Perhaps you should try some spelling variations:
"michael warren schwarz" » "michael warten schwarz" (Expand Search), "michael wahren schwarz" (Expand Search), "michael wirren schwarz" (Expand Search), "michael warren schwarzes" (Expand Search)
"michael waren schwarz" » "michael waren schwarzes" (Expand Search)
"michael karren schwarzen" » "michael karren schwarzesen" (Expand Search), "michael karten schwarzen" (Expand Search), "michael karren schwaben" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("michael warren schwarz") OR ("michael waren schwarz"))) OR ("michael karren schwarzen"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"michael warren schwarz\") OR (\"michael waren schwarz\"))) OR (\"michael karren schwarzen\"))*".
• Removing quotes may allow a broader search: (((( michael warren schwarz ) OR ( michael waren schwarz ))) OR ( michael karren schwarzen ))*.