Perhaps you should try some spelling variations:
transformer costs » transfer costs, transport costs, transformer based
transfer fees » transfer from
costs across » scores across, risks across
den transfer » gene transfer, heat transfer, data transfer
luis e » luis f, luis c, luis a
e den » es den, se den, _ den
cara » carla, care, car

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 _ transformer costs across ) OR ( luis e den transfer fees cara ))~.
• Adding a wildcard symbol may retrieve word variants: (( luis rene _ transformer costs across ) or ( luis e den transfer fees cara ))*.