Perhaps you should try some spelling variations:
mohan roy » mohan r, mohan rai, roman roy
mohon roy » mon roy
cohen roy » cohen jody, cohen guy
raja ram » raja ravi
raja r » raja _, raja j
raja m » raja _, raja 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 ram) OR (raja r))) OR (raja roy)) mohan roy\") or (\"raja m ((mohon roy) OR (cohen roy))\"))".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"((((raja ram) or (raja r))) or (raja roy)) mohan roy\\") or (\\"raja m ((mohon roy) OR (cohen roy))\\"))\"".
• Removing quotes may allow a broader search: (( ((((raja ram) or (raja r))) or (raja roy)) mohan roy ) or ( raja m ((mohon roy) OR (cohen roy)) )).