Perhaps you should try some spelling variations:
transformar el » transformar la, transformar las, transformar los
head transfer » heat transfer, heart transfer, load transfer
transfer der » transfer fees, transfer _
el across » eu across, cil across, esg across
der adam » bei adam, der aal, der abda
luis a » luis f, luis c
a head » _ head

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 ((rene 3) OR (rene l)) transformar el across ) OR ( luis a head transfer der adam ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis ((rene 3) OR (rene l)) transformar el across ) or ( luis a head transfer der adam ))~".
• Adding a wildcard symbol may retrieve word variants: (( luis ((rene 3) OR (rene l)) transformar el across ) or ( luis a head transfer der adam ))*.