Perhaps you should try some spelling variations:
"raja mam mohon roy" » "raja ram mohan roy", "raja mam mon roy", "raja m mohon roy"
"raja mam cohen roy" » "raja marc cohen roy", "raja mark cohen roy", "raja m cohen roy", "raja mam cohen jody", "raja mam cohen guy"
"raja o kwon o" » "raja _ kwon o", "raja j kwon o", "raja m kwon o", "raja o kwon _", "raja o kwon 4", "raja o kwon j"

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: (((("raja mam mohon roy") OR ("raja mam cohen roy"))) OR ("raja o kwon o")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"raja mam mohon roy\") OR (\"raja mam cohen roy\"))) or (\"raja o kwon o\"))".
• Removing quotes may allow a broader search: (((( raja mam mohon roy ) OR ( raja mam cohen roy ))) or ( raja o kwon o )).
• Adding a wildcard symbol may retrieve word variants: (((("raja mam mohon roy") OR ("raja mam cohen roy"))) or ("raja o kwon o"))*.