Perhaps you should try some spelling variations:
"raja r mohan roy" » "raja r mohan r", "raja r mohan rai", "raja r roman roy", "raja _ mohan roy", "raja j mohan roy"
"raja roy mohon roy" » "raja roy mon roy", "raja _oy mohon roy", "raja joy mohon roy"
"raja m cohen roy" » "raja m cohen jody", "raja m cohen guy", "raja _ cohen roy", "raja j cohen roy", "raja b cohen roy"

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 roy mohon roy") OR ("raja r mohan roy"))) OR ("raja m cohen roy")).
• Removing quotes may allow a broader search: (((( raja roy mohon roy ) or ( raja r mohan roy ))) or ( raja m cohen roy )).
• Adding a wildcard symbol may retrieve word variants: (((("raja roy mohon roy") or ("raja r mohan roy"))) or ("raja m cohen roy"))*.