Perhaps you should try some spelling variations:
"online ramsey search document" » "online reisen search document", "online ramsey research document", "online halley search document", "online ramsey space document"
"online based search document" » "line based search document", "spline based search document", "online band search document", "online based research document"
"online rand search or random search document" » "online ranked search or random search document", "online rand research or random search document", "online range search or random search document"

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: (((("online ramsey search document") OR ("online based search document"))) OR ("online ((rand search) or (random search)) document")).
• Removing quotes may allow a broader search: (((( online ramsey search document ) or ( online based search document ))) or ( online ((rand search) or (random search)) document )).
• Adding a wildcard symbol may retrieve word variants: (((("online ramsey search document") or ("online based search document"))) or ("online ((rand search) or (random search)) document"))*.