Perhaps you should try some spelling variations:
"estudios autonomicos _ federalism ;" » "estado autonomico _ federalism ;" (Expand Search)
autonomicos y » autonomico y (Expand Search), autonomica y (Expand Search), autonomico en (Expand Search)
"Estudios autonómicos y federalismo ;" » "Estudios autonómicos el federalismo ;" (Expand Search), "Estudios autonómicos del federalismo ;" (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: (("Estudios autonómicos y federalismo ;") OR ("estudios autonomicos _ federalism ;"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Estudios autonómicos y federalismo ;\") OR (\"estudios autonomicos _ federalism ;\"))".
• Removing quotes may allow a broader search: (( Estudios autonómicos y federalismo ; ) OR ( estudios autonomicos _ federalism ; )).
• Adding a wildcard symbol may retrieve word variants: (("Estudios autonómicos y federalismo ;") OR ("estudios autonomicos _ federalism ;"))*.