Perhaps you should try some spelling variations:
"online ranked search document" » "online ranking search document", "online brand search document", "online ramsey search document", "online range search 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 rand research or random search document", "online range search or random search document", "online trend search or random search document"

Try widening your search to All Fields.

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 ranked search document") OR ("online based search document"))) OR ("online ((rand search) or (random search)) document")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"online ranked search document\") OR (\"online based search document\"))) or (\"online ((rand search) or (random search)) document\"))".
• Removing quotes may allow a broader search: (((( online ranked search document ) OR ( online based search document ))) or ( online ((rand search) or (random search)) document )).
• Adding a wildcard symbol may retrieve word variants: (((("online ranked search document") OR ("online based search document"))) or ("online ((rand search) or (random search)) document"))*.