Perhaps you should try some spelling variations:
transfer systems » transport systems, transit systems
transformed de » transformed _, transformed 1, transformed a
systems dairy » systems der, systems data, systems das
1 transformed » _ transformed, a transformed, vi transformed
den transfer » gene transfer, heat transfer, data transfer
aguas de » aguas del, aguas do, vagues de
de macao » de acao, de macau, de marcas
de 1 » dem 1, der 1, d 1

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: (( agua _ den transfer systems dairy ) OR ( aguas de 1 transformed de macao ))~.
• Adding a wildcard symbol may retrieve word variants: (( agua _ den transfer systems dairy ) or ( aguas de 1 transformed de macao ))*.