Perhaps you should try some spelling variations:
"aspectos ambientales y socioeconomicos ;" » "aspectos ambientales socio economicos ;", "aspectos ambientales socio economico ;", "aspectos ambientales en socioeconomicos ;"
"aspectos ambientales y socioeconomicas ;" » "aspectos ambientales socioeconomica y ;", "aspectos ambientales de socioeconomia ;", "aspectos ambientales socio economica ;", "aspectos ambientales en socioeconomicas ;"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("aspectos ambientales y socioeconomicos ;") or ("aspectos ambientales y socioeconomicas ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("aspectos ambientales y socioeconomicos ;") OR ("aspectos ambientales y socioeconomicas ;"))*.
• Removing quotes may allow a broader search: (( aspectos ambientales y socioeconomicos ; ) or ( aspectos ambientales y socioeconomicas ; ))*.