Perhaps you should try some spelling variations:
"gia geographical labor paper i/2011" » "gia geographic labor paper i/2011", "gia geographical factors paper i/2011", "gia geographical area paper i/2011", "a geographical labor paper i/2011", "sea geographical labor paper i/2011", "giraud geographical labor paper i/2011", "gia geographical labor power i/2011", "gia geographical major paper i/2011", "gia geographical labor chapter i/2011", "gia geographical labor paper _/2011"
"a demographic white paper ii/2011" » "a demographic shifts paper ii/2011", "a demographic life paper ii/2011", "a demographic shift paper ii/2011", "_ demographic white paper ii/2011", "a demographic white paper _/2011", "a demographic white paper _i/2011"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("gia geographical labor paper i/2011") OR ("a demographic white paper ii/2011"))~.
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