Perhaps you should try some spelling variations:
"online case research commentary" » "online case research communities", "online care research commentary", "online use research commentary", "online change research commentary", "online class research commentary", "online classes research commentary"
"online card research documents" » "online card research arguments", "online card research comments", "online card research catchments", "online care research documents", "online based research documents", "online car research documents", "online call research documents"
"online case research community" » "online care research community", "online use research community", "online change research community", "online class research community", "online classes research community"
"online brand search document" » "online bin search document", "online brand research document", "online branded search document", "online branch 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 card research documents") OR ((("online case research commentary") OR ("online case research community"))))) OR ("online brand search document")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"online card research documents\") or (((\"online case research commentary\") OR (\"online case research community\"))))) or (\"online brand search document\"))".
• Removing quotes may allow a broader search: (((( online card research documents ) or ((( online case research commentary ) OR ( online case research community ))))) or ( online brand search document )).
• Adding a wildcard symbol may retrieve word variants: (((("online card research documents") or ((("online case research commentary") OR ("online case research community"))))) or ("online brand search document"))*.