Perhaps you should try some spelling variations:
transfer system » transfer systems, transport system, transit system
a transformed » _ transformed, _ transformer, a transforming
transformed a » transformed _, transformed 1, transformer 1
den transfer » gene transfer, heat transfer, data transfer
system prior » system pilot
agua el » aguas del
a macao » a macro, _ macao
e den » es den, se den, _ den
el a » e a, et a, en a

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 e den transfer system prior ) OR ( agua el a transformed a macao ))~.
• Adding a wildcard symbol may retrieve word variants: (( agua e den transfer system prior ) or ( agua el a transformed a macao ))*.