Perhaps you should try some spelling variations:
"ciencies experimentals y tecnologia ;" » "ciencias experimentales y tecnologia ;", "science experiments y tecnologia ;", "ciencies experimentales y tecnologia ;", "ciencies experimental y tecnologia ;", "ciencies experimentals 2 tecnologia ;"
"ciencias experimental de neurologos ;" » "ciencia experimental de neurologos ;", "ciencias experimentales de neurologos ;", "ciencias experimentos de neurologos ;", "ciencias experimental de neurologia ;", "ciencias experimental de teologos ;", "ciencias experimental de nefrologia ;"

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: (("ciencias experimental de neurologos ;") or ("ciencies experimentals y tecnologia ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("ciencias experimental de neurologos ;") OR ("ciencies experimentals y tecnologia ;")).
• Removing quotes may allow a broader search: (( ciencias experimental de neurologos ; ) or ( ciencies experimentals y tecnologia ; )).
• Adding a wildcard symbol may retrieve word variants: (("ciencias experimental de neurologos ;") or ("ciencies experimentals y tecnologia ;"))*.