Perhaps you should try some spelling variations:
federal transfers » central transfers, fiscal transfers
has transformer » has transformed, ray transformer, tape transformer
a transformer » _ transformer, a transformed, 3 transformer
transfers ai » transfers i, transfers bei, transfers dau
a federal » _ federal
luis a » luis f, luis c

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: (( luis _ ((has transformer) OR (a transformer)) 1 a ) OR ( luis a federal transfers ai cmcacao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis _ ((has transformer) OR (a transformer)) 1 a ) or ( luis a federal transfers ai cmcacao ))~".
• Adding a wildcard symbol may retrieve word variants: (( luis _ ((has transformer) OR (a transformer)) 1 a ) or ( luis a federal transfers ai cmcacao ))*.