Perhaps you should try some spelling variations:
coordinacion del » coordinacion en (Expand Search), coordinacion e (Expand Search), coordination des (Expand Search)
de defensores » los defensores (Expand Search)
xxi jornadas » xii jornadas (Expand Search), xi jornadas (Expand Search), xvi jornadas (Expand Search)
del defensor » el defensor (Expand Search)
xx jornadas » xix jornadas (Expand Search), xxv jornadas (Expand Search), ix jornadas (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: (("((xx jornadas) OR (xxi jornadas)) de coordinacion de defensores del pueblo") OR ("((xx jornadas) OR (xxi jornadas)) de coordinacion del defensor del pueblo"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"((xx jornadas) OR (xxi jornadas)) de coordinacion de defensores del pueblo\") OR (\"((xx jornadas) OR (xxi jornadas)) de coordinacion del defensor del pueblo\"))".
• Removing quotes may allow a broader search: (( ((xx jornadas) OR (xxi jornadas)) de coordinacion de defensores del pueblo ) OR ( ((xx jornadas) OR (xxi jornadas)) de coordinacion del defensor del pueblo )).
• Adding a wildcard symbol may retrieve word variants: (("((xx jornadas) OR (xxi jornadas)) de coordinacion de defensores del pueblo") OR ("((xx jornadas) OR (xxi jornadas)) de coordinacion del defensor del pueblo"))*.