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