Perhaps you should try some spelling variations:
"cooperation fast biologique periodiques." » "cooperation fast biologiques periodiques.", "cooperation fast biologie periodiques.", "cooperation fast sociologique periodiques.", "cooperation test biologique periodiques.", "cooperation aspect biologique periodiques.", "cooperation lutte biologique periodiques."
"cooperation _ pratique periodiques." » "cooperation _ critique periodiques.", "cooperation _ politique periodiques.", "cooperation _ physique periodiques."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("cooperation _ pratique periodiques.") or ("cooperation fast biologique periodiques."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cooperation _ pratique periodiques.") OR ("cooperation fast biologique periodiques.")).
• Removing quotes may allow a broader search: (( cooperation _ pratique periodiques. ) or ( cooperation fast biologique periodiques. )).
• Adding a wildcard symbol may retrieve word variants: (("cooperation _ pratique periodiques.") or ("cooperation fast biologique periodiques."))*.