Perhaps you should try some spelling variations:
"online care research documents" » "online care research arguments", "online care research comments", "online care research catchments", "online car research documents", "online card research documents", "online call research documents"
"online career research documents" » "online career research arguments", "online career research comments", "online career research catchments", "online careers research documents", "online career researcher documents", "online cancer research documents", "online chapter research documents", "online peer research documents", "online car research documents", "online carer research documents", "online carder research documents", "online caller research documents"
"online case research documents" » "online case research arguments", "online case research comments", "online case research catchments", "online use research documents", "online abuse research documents", "online disease research documents", "online class research documents", "online classes research documents"
"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"

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