Perhaps you should try some spelling variations:
mohan roy » mohan r, roman roy, rammohan roy
mohan rai » mohana rao, milan rai, mohan r
mohon roy » cohen roy, mon roy
raja ram » raja ravi, raja r, raja roy
raja m » raja j, raja r

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 ((mohan roy) OR (mohan rai))\") or (\"((raja m) OR (raja _)) mohon roy\"))".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"raja ram ((mohan roy) or (mohan rai))\\") or (\\"((raja m) OR (raja _)) mohon roy\\"))\"".
• Removing quotes may allow a broader search: (( raja ram ((mohan roy) or (mohan rai)) ) or ( ((raja m) OR (raja _)) mohon roy )).