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

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

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