Perhaps you should try some spelling variations:
kenneth cooper » kenneth carter (Expand Search), kenneth foote (Expand Search), kenneth foster (Expand Search)
kenneth glaser » kenneth blaxter (Expand Search), kenneth baker (Expand Search), kenneth grace (Expand Search)
kenneth tanner » kenneth baker (Expand Search), kenneth anene (Expand Search), kenneth tan (Expand Search)
kenneth alper » kenneth allen (Expand Search), kenneth carter (Expand Search), kenneth alan (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: fred ((kenneth cooper) or (((((kenneth alper) OR (kenneth glaser))) or (kenneth tanner))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: fred ((kenneth cooper) OR (((((kenneth alper) OR (kenneth glaser))) OR (kenneth tanner)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "fred ((kenneth cooper) or (((((kenneth alper) OR (kenneth glaser))) or (kenneth tanner))))".
• Adding a wildcard symbol may retrieve word variants: fred ((kenneth cooper) or (((((kenneth alper) OR (kenneth glaser))) or (kenneth tanner))))*.