Perhaps you should try some spelling variations:
"_ geographic shift paper v/2011" » "_ geographical shift paper v/2011", "_ demographic shift paper v/2011", "_ geographic society paper v/2011", "_ geography shift paper v/2011", "_ geographic short paper v/2011", "_ geographic shift chapter v/2011", "_ geographic shift cancer v/2011", "_ geographic shift paper iv/2011", "_ geographic shift paper _/2011", "_ geographic shift paper i/2011"
"do demographic shifts paper 2/2011" » "do demographics shifts paper 2/2011", "does demographic shifts paper 2/2011", "geo demographic shifts paper 2/2011", "do demographic shifts paper _/2011", "do demographic shifts paper i/2011", "do demographic shifts paper 1/2011"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("do demographic shifts paper 2/2011") or ("_ geographic shift paper v/2011"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("do demographic shifts paper 2/2011") OR ("_ geographic shift paper v/2011")).
• Removing quotes may allow a broader search: (( do demographic shifts paper 2/2011 ) or ( _ geographic shift paper v/2011 )).
• Adding a wildcard symbol may retrieve word variants: (("do demographic shifts paper 2/2011") or ("_ geographic shift paper v/2011"))*.