Perhaps you should try some spelling variations:
transfer system » transfer systems, transport system, transit system
gene transfer » wire transfer, file transfer, land transfer
system across » systems across, system access, systems cross
transfer der » transfer fees, transfer _
rene gene » gene gene, one gene, rape gene
der aal » der aalst, der adel
luis e » luis f, luis c, luis a
e heat » _ heat, a heat, 1 heat

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 gene transfer system across ) OR ( luis e heat transfer der aal ))~.
• Adding a wildcard symbol may retrieve word variants: (( luis rene gene transfer system across ) or ( luis e heat transfer der aal ))*.