Perhaps you should try some spelling variations:
"online rand research documents" » "online rand research comments", "online rand research catchments", "online rand research students", "online brand research documents", "online range research documents", "online card research documents", "online band research documents", "online hand research documents"
"online rand research arguments" » "online rand research catchments", "online rand research students", "online rand research elements", "online brand research arguments", "online range research arguments", "online card research arguments", "online band research arguments", "online hand research arguments"
"online ranked search document" » "online ranking search document", "online brand search document", "online ramsey search document", "online range search document", "online based search document", "online random search document"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("online rand research documents") OR ("online rand research arguments"))) OR ("online ranked search document")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"online rand research documents\") OR (\"online rand research arguments\"))) or (\"online ranked search document\"))".
• Removing quotes may allow a broader search: (((( online rand research documents ) OR ( online rand research arguments ))) or ( online ranked search document )).
• Adding a wildcard symbol may retrieve word variants: (((("online rand research documents") OR ("online rand research arguments"))) or ("online ranked search document"))*.