Perhaps you should try some spelling variations:
der transformer » dc transformer, se transformer, der transferamter
transformer les » transformer 1, transformer _, transformer based
transfer bei » transfer beim, transfers bei, transfer der
les across » lines across, lives across, smes across
bias ende » bis ende, bias index, das ende
luis a » luis f, luis c
a heat » a heart, _ heat, a head
marx » mark, mary, marc

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: (( bias ende der transformer les across ) OR ( luis a heat transfer bei marx ))~.
• Adding a wildcard symbol may retrieve word variants: (( bias ende der transformer les across ) or ( luis a heat transfer bei marx ))*.