Perhaps you should try some spelling variations:
"online range research comments" » "online range research commons", "online range research contents", "online range research commentary", "online change research comments", "online large research comments", "online range search comments", "online ring research comments", "nonlinear range research comments"
"online handel research concepts" » "online handel research context", "online channel research concepts", "online panel research concepts", "online handover research concepts"
"online hanse research concepts" » "online hanse research context", "online change research concepts", "online kansei research concepts", "online sansei research concepts", "online hate research concepts", "online hand research concepts"

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 range research comments") OR ((("online handel research concepts") OR ("online hanse research concepts")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"online range research comments\") or (((\"online handel research concepts\") OR (\"online hanse research concepts\"))))".
• Removing quotes may allow a broader search: (( online range research comments ) or ((( online handel research concepts ) OR ( online hanse research concepts )))).
• Adding a wildcard symbol may retrieve word variants: (("online range research comments") or ((("online handel research concepts") OR ("online hanse research concepts"))))*.