Perhaps you should try some spelling variations:
"online car research documents" » "online car research arguments", "online car research catchments", "online car research students", "online care research documents", "online cars research documents", "online scar research documents", "online chat research documents", "online case research documents", "online ch research documents"
"online card research comments" » "online card research contents", "online card research commentary", "online card research community", "online care research comments", "online case research comments", "online call research comments", "online chatd research comments", "online cased research comments", "online chd research comments"
"online card research commons" » "online card research common", "online card research company", "online card research community", "online care research commons", "online case research commons", "online call research commons", "online chatd research commons", "online cased research commons", "online chd research commons"
"online based research commons" » "online based research common", "online based research company", "online based research community", "online basic research commons", "line based research commons", "spline based research commons", "online band research commons"
"online rand search document" » "online brand search document", "online band search document", "online hand search document", "online random search document", "online ranked search document", "online rand research 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 car research documents") OR ((("online card research comments") OR ((("online card research commons") OR ("online based research commons"))))))) OR ("online rand search document")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"online car research documents\") or (((\"online card research comments\") or (((\"online card research commons\") OR (\"online based research commons\"))))))) or (\"online rand search document\"))".
• Removing quotes may allow a broader search: (((( online car research documents ) or ((( online card research comments ) or ((( online card research commons ) OR ( online based research commons ))))))) or ( online rand search document )).
• Adding a wildcard symbol may retrieve word variants: (((("online car research documents") or ((("online card research comments") or ((("online card research commons") OR ("online based research commons"))))))) or ("online rand search document"))*.