Perhaps you should try some spelling variations:
coleccion becas » coleccion ciencias
coleccion canto » coleccion santo, coleccion centro, coleccion clacso
becas portugal » books portugal, casas portugal
canto portal » canto coral, cuanto aportan, tanto aportan
portugal y » portugal en
de clase » la clase

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( coleccion becas portugal y flacso ) OR ( coleccion canto portal ((de clase) OR (de clacso)) ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( coleccion becas portugal y flacso ) or ( coleccion canto portal ((de clase) OR (de clacso)) ))~".
• Adding a wildcard symbol may retrieve word variants: (( coleccion becas portugal y flacso ) or ( coleccion canto portal ((de clase) OR (de clacso)) ))*.