Perhaps you should try some spelling variations:
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"online rand search document" » "online brand search document", "online band search document", "online random search document", "online ranked search document", "online range search document"
"online hand search document" » "online band search document", "online handel search document", "online brand search document", "online hana search document", "online hard search document", "online paid 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) or (range research)) documents") OR ((("online rand search document") OR ("online hand search document")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"online ((rand research) or (range research)) documents\") or (((\"online rand search document\") OR (\"online hand search document\"))))".
• Removing quotes may allow a broader search: (( online ((rand research) or (range research)) documents ) or ((( online rand search document ) OR ( online hand search document )))).
• Adding a wildcard symbol may retrieve word variants: (("online ((rand research) or (range research)) documents") or ((("online rand search document") OR ("online hand search document"))))*.