Perhaps you should try some spelling variations:
studies transfer » students transfer, student transfer, student transfers
transfer file » transfer fee, transfer from, transfer fees
den transfer » gene transfer, heat transfer, data transfer
transfer der » transfer fees, transfer _
file across » fire across, life across, time across
3.7 studies » 2.7 studies, 3.4 studies, 3 studies
bias ende » bis ende, bias index, das ende
ende den » ende der, ende des, wende der
luis 3.7 » louis 3.1, luis h.b
der carl » dr carl, de carl, der call

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 den transfer file across ) OR ( luis 3.7 studies transfer der carl ))~.
• Adding a wildcard symbol may retrieve word variants: (( bias ende den transfer file across ) or ( luis 3.7 studies transfer der carl ))*.