Perhaps you should try some spelling variations:
mohan roy » mohon roy, mohan rai, roman roy
raja ram » raja ravi, raja m
mohan r » mohan _, mohan j, mohan k
raja j » raja _, raja m
raja r » raja _, raja m

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) OR (raja roy))) OR (((raja j) OR (raja r)))) ((mohan roy) OR (mohan r)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((raja ram) or (raja roy))) or (((raja j) or (raja r)))) ((mohan roy) OR (mohan r))".
• Adding a wildcard symbol may retrieve word variants: ((((raja ram) or (raja roy))) or (((raja j) or (raja r)))) ((mohan roy) OR (mohan r))*.