Perhaps you should try some spelling variations:
"ciencies experimental de tecnologia ;" » "ciencies experimentals de tecnologia ;", "ciencia experimental de tecnologia ;", "ciencias experimentos de tecnologia ;", "ciencies experimental y tecnologia ;", "ciencies experimental la tecnologia ;", "ciencies experimental 664 tecnologia ;"
"ciencias experimentales de tecnologia ;" » "ciencias experimentales y tecnologia ;", "ciencias experimental del tecnologia ;", "ciencias experimentos de tecnologia ;", "ciencias experimentales la tecnologia ;", "ciencias experimentales 664 tecnologia ;"

Try widening your search to All Fields.

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