Perhaps you should try some spelling variations:
"cooperation _ bibliotheques periodiques." » "cooperation _ biologiques periodiques.", "cooperation _ publiques periodiques.", "cooperation _ bibliotheconomie periodiques."
"cooperation et ecologie periodiques." » "cooperation et biologie periodiques.", "cooperation et sociologie periodiques.", "cooperation et psychologie periodiques.", "cooperation fast ecologie periodiques.", "cooperation est ecologie periodiques.", "cooperation et economie periodiques."

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: (("cooperation _ bibliotheques periodiques.") or ("cooperation et ecologie periodiques."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cooperation _ bibliotheques periodiques.") OR ("cooperation et ecologie periodiques.")).
• Removing quotes may allow a broader search: (( cooperation _ bibliotheques periodiques. ) or ( cooperation et ecologie periodiques. )).
• Adding a wildcard symbol may retrieve word variants: (("cooperation _ bibliotheques periodiques.") or ("cooperation et ecologie periodiques."))*.