Perhaps you should try some spelling variations:
"cooperacion en solidaritat." » "cooperacion i solidaritat."
"cooperacion la solidaritat." » "cooperacion las solidaritat.", "cooperacion a solidaritat.", "cooperacion al solidaritat.", "cooperacion la solidaridad.", "cooperacion i solidaritat."
"cooperacion y solidaritat." » "cooperacion i solidaritat.", "cooperacion y solidaridad.", "cooperacion y solidaria."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cooperacion en solidaritat.") OR ("cooperacion la solidaritat."))) or ("cooperacion y solidaritat."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cooperacion en solidaritat.") OR ("cooperacion la solidaritat."))) OR ("cooperacion y solidaritat.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"cooperacion en solidaritat.\") OR (\"cooperacion la solidaritat.\"))) or (\"cooperacion y solidaritat.\"))".
• Removing quotes may allow a broader search: (((( cooperacion en solidaritat. ) OR ( cooperacion la solidaritat. ))) or ( cooperacion y solidaritat. )).
• Adding a wildcard symbol may retrieve word variants: (((("cooperacion en solidaritat.") OR ("cooperacion la solidaritat."))) or ("cooperacion y solidaritat."))*.