Perhaps you should try some spelling variations:
transformer based » transformer les, transport based, transformation based
heart transfer » heat transfer, net transfer, far transfer
based across » based access, shared across, varied across
transfer bei » transfer beim, transfers bei, transfer der
bei macro » bei marx, new macro, bei marc
de heart » one heart, _ heart, 3 heart
luis de » luis e
bis » bias

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: (( bis ende _ transformer based across ) OR ( luis de heart transfer bei macro ))~.
• Adding a wildcard symbol may retrieve word variants: (( bis ende _ transformer based across ) or ( luis de heart transfer bei macro ))*.