Perhaps you should try some spelling variations:
der transformer » dc transformer, se transformer, der transferamter
transformer eu » transformer les, transformer 1, transformer _
transfer bei » transfer beim, transfers bei, transfer der
bias ende » bis ende, bias index, das ende
eu across » 19 across
heat » 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 eu across ) OR ( luis _ heat transfer bei marx ))~.
• Adding a wildcard symbol may retrieve word variants: (( bias ende der transformer eu across ) or ( luis _ heat transfer bei marx ))*.