Perhaps you should try some spelling variations:
plan territorial » _ territorial (Expand Search)
cultural vasco » cultura vasca (Expand Search), cultural bases (Expand Search), cultural das (Expand Search)
sectorial del » sectorial de (Expand Search), sectorial en (Expand Search), sectorial e (Expand Search)
balance del » balance de (Expand Search), alcance del (Expand Search)
avance del » avance de (Expand Search), alcance del (Expand Search), avances de (Expand Search)

Try widening your search to All Fields.

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

• Removing quotes may allow a broader search: ((avance del) OR (balance del)) plan territorial sectorial del patrimonio cultural vasco.