Perhaps you should try some spelling variations:
"graph ramsey john rob" » "graphs ramsey john rob", "frank ramsey john rob", "graph ramsay john rob", "graph casey john rob", "graph ramsey john robb", "graph ramsey john r.b", "graph ramsey john roe"
"raja m morton roy" » "raja m morton from", "raja m morton o", "raja m norton rob", "raja mr morton roy", "raja _ morton roy", "raja j morton roy", "raja r morton roy"
"raja m mohon roy" » "raja m cohen roy", "raja m mon roy", "raja m mohan 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 ramsey john rob") OR ((((("raja m mohon roy") OR ("raja m morton roy"))) OR ("raja m moxon roy")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"graph ramsey john rob\") or (((((\"raja m mohon roy\") OR (\"raja m morton roy\"))) or (\"raja m moxon roy\"))))".
• Removing quotes may allow a broader search: (( graph ramsey john rob ) or ((((( raja m mohon roy ) OR ( raja m morton roy ))) or ( raja m moxon roy )))).
• Adding a wildcard symbol may retrieve word variants: (("graph ramsey john rob") or ((((("raja m mohon roy") OR ("raja m morton roy"))) or ("raja m moxon roy"))))*.