Perhaps you should try some spelling variations:
"cohen alexander i" » "joshua alexander i" (Expand Search), "cohen alexander si" (Expand Search), "cohen alexander g" (Expand Search), "cohen alexander h" (Expand Search)
"jahn alexander i" » "aaron alexander i" (Expand Search), "fian alexander i" (Expand Search), "gant alexander i" (Expand Search), "jahn alexander si" (Expand Search), "jahn alexander g" (Expand Search), "jahn alexander h" (Expand Search)
"john alexander m" » "joshua alexander m" (Expand Search), "foong alexander m" (Expand Search), "boyd alexander m" (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: (((("jahn alexander i") OR ("cohen alexander i"))) OR ("john alexander m"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"jahn alexander i\") OR (\"cohen alexander i\"))) OR (\"john alexander m\"))".
• Removing quotes may allow a broader search: (((( jahn alexander i ) OR ( cohen alexander i ))) OR ( john alexander m )).
• Adding a wildcard symbol may retrieve word variants: (((("jahn alexander i") OR ("cohen alexander i"))) OR ("john alexander m"))*.