Perhaps you should try some spelling variations:
mohon roy » cohen roy, mon roy
mohan roy » mohan r, mohan rai, roman roy
m mohan » _ mohan, b mohan, k mohan
r mohan » _ mohan
raja m » raja _, raja j
raja r » 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 ravi mohon roy ) OR ((( raja m mohan roy ) OR ( raja r mohan roy )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( raja ravi mohon roy ) or ((( raja m mohan roy ) OR ( raja r mohan roy ))))".
• Adding a wildcard symbol may retrieve word variants: (( raja ravi mohon roy ) or ((( raja m mohan roy ) OR ( raja r mohan roy ))))*.