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