Perhaps you should try some spelling variations:
"Memento administraciones publicas" » "Memento administracion publica" (Expand Search)
memento administraciones » entre administraciones (Expand Search), en administraciones (Expand Search), memento administrativo (Expand Search)
"memento administracio local" » "memento administrativo local" (Expand Search), "fomento administrativo local" (Expand Search), "medicamentos administracion local" (Expand Search), "memento administracion local" (Expand Search), "memento administracio publica" (Expand Search), "memento administracion electoral" (Expand Search)

Try widening your search to All Fields.

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

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