Perhaps you should try some spelling variations:
espiral portugal » espana portugal, rural portugal, espiral poetica
coleccion becas » coleccion ciencias
becas portugal » books portugal, casas portugal
portugal de » portugal e, portugal en, portal de
portugal y » portugal en
y clacso » y flacso, y clase, y cacao

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( coleccion espiral portugal y clacso ) or ( coleccion becas portugal de clacso ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( coleccion espiral portugal y clacso ) OR ( coleccion becas portugal de clacso )).
• Adding a wildcard symbol may retrieve word variants: (( coleccion espiral portugal y clacso ) or ( coleccion becas portugal de clacso ))*.