Perhaps you should try some spelling variations:
coleccion science » coleccion scientia, coleccion ciencia, coleccion ciencis
coleccion control » coleccion centro, eleccion control, coleccion canto
control political » control politico, century political, carl political
science portugal » sciences portugal, science political, science popular
political el » politica el, politicas el, political _
en clacso » red clacso, de clacso, en 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 science portugal en clacso ) OR ( coleccion control political el caso ))~.
• Adding a wildcard symbol may retrieve word variants: (( coleccion science portugal en clacso ) or ( coleccion control political el caso ))*.