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