Perhaps you should try some spelling variations:
ray transformer » a transformer, tape transformer, _ transformer
transformer les » transformer 1, transformer _, transformer based
den transfer » gene transfer, heat transfer, data transfer
les across » lines across, lives across, smes across
luis a » luis f, luis c
a den » _ den, a der, a des
rene » rent, gene

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( luis rene ray transformer les across ) or ( luis a den transfer _ cao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis rene ray transformer les across ) OR ( luis a den transfer _ cao )).
• Adding a wildcard symbol may retrieve word variants: (( luis rene ray transformer les across ) or ( luis a den transfer _ cao ))*.