Perhaps you should try some spelling variations:
"graph ramsay john rob" » "graph ramsey john rob", "graphs ramsey john rob", "graph grammar john rob", "graph graemsay john rob", "graph ramsay john robb", "graph ramsay john r.b", "graph ramsay john roe"
"raja m mohon roy" » "raja m cohen roy", "raja m mon roy", "raja m mohan roy", "raja m morton roy", "raja _ mohonk roy", "raja _ mohon roy", "raja j mohon roy", "raja r mohon roy"
"raja m moxon roy" » "raja m mon roy", "raja mr moxon roy", "raja j moxon roy", "raja m oxon roy", "raja _ moxon roy", "raja r moxon roy"

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: (("graph ramsay john rob") OR ((("raja m mohon roy") OR ("raja m moxon roy")))).
• Removing quotes may allow a broader search: (( graph ramsay john rob ) or ((( raja m mohon roy ) or ( raja m moxon roy )))).
• Adding a wildcard symbol may retrieve word variants: (("graph ramsay john rob") or ((("raja m mohon roy") or ("raja m moxon roy"))))*.