Perhaps you should try some spelling variations:
transfer schemes » transfer scheme, transfer systems
a transformed » _ transformed, _ transformer, a transforming
transformed 1 » transformed _, transformer 1, transformed a
den transfer » gene transfer, heat transfer, data transfer
schemes vss » schemes das, schemes use, schemes versus
langue du » langue de
der code » bar code, qr code, der co2
code den » code de, code des, code der
du a » dr a, eu a, d a
acao » cacao, macao, cao

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: (( der code den transfer schemes vss ) OR ( langue du a transformed 1 acao ))~.
• Adding a wildcard symbol may retrieve word variants: (( der code den transfer schemes vss ) or ( langue du a transformed 1 acao ))*.