Perhaps you should try some spelling variations:
coleccion becas » coleccion ciencias
portugal de » portugal y, portal de, portugal _
coleccion a » coleccion 90, coleccion 80, coleccion aula
a portugal » au portugal, y portugal, _ portugal
portugal e » portugal y
e clacso » de clacso, red clacso, de flacso

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( coleccion becas ((portugal de) OR (portugal en)) clacso ) or ( coleccion a portugal e clacso ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( coleccion becas ((portugal de) OR (portugal en)) clacso ) OR ( coleccion a portugal e clacso )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( coleccion becas ((portugal de) OR (portugal en)) clacso ) or ( coleccion a portugal e clacso ))".
• Adding a wildcard symbol may retrieve word variants: (( coleccion becas ((portugal de) OR (portugal en)) clacso ) or ( coleccion a portugal e clacso ))*.