Perhaps you should try some spelling variations:
federal transfer » federal transfers, central transfers, fiscal transfer
e federal » _ federal, a federal, 4 federal
aguas do » aguas de, aguas del
help cao » help cut
luis e » luis f, luis c, luis a
do air » do aid, does air
help a » help _, help 3, help 6

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis e federal transfer _ acao ) OR ( aguas do air transport ((help cao) OR (help a)) ))~".
• Adding a wildcard symbol may retrieve word variants: (( luis e federal transfer _ acao ) OR ( aguas do air transport ((help cao) OR (help a)) ))*.