Perhaps you should try some spelling variations:
"biblioteconomia dret administracion local ;" » "biblioteconomia la administracion local ;" (Expand Search), "biblioteconomia i administracion local ;" (Expand Search)
"biblioteconomia dret administracio local ;" » "biblioteconomia i administracio local ;" (Expand Search)
"biblioteconomia de administracion cultural ;" » "biblioteconomia la administracion cultural ;" (Expand Search), "biblioteconomia i administracio cultural ;" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("biblioteconomia de administracion cultural ;") OR ((((("biblioteconomia dret administratiu local ;") OR ("biblioteconomia dret administracion local ;"))) OR ("biblioteconomia dret administracio local ;"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"biblioteconomia de administracion cultural ;\") OR (((((\"biblioteconomia dret administratiu local ;\") OR (\"biblioteconomia dret administracion local ;\"))) OR (\"biblioteconomia dret administracio local ;\"))))".
• Removing quotes may allow a broader search: (( biblioteconomia de administracion cultural ; ) OR ((((( biblioteconomia dret administratiu local ; ) OR ( biblioteconomia dret administracion local ; ))) OR ( biblioteconomia dret administracio local ; )))).
• Adding a wildcard symbol may retrieve word variants: (("biblioteconomia de administracion cultural ;") OR ((((("biblioteconomia dret administratiu local ;") OR ("biblioteconomia dret administracion local ;"))) OR ("biblioteconomia dret administracio local ;"))))*.

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