Perhaps you should try some spelling variations:
transfer system » transfer systems, transport system, transit system
transformer 1 » transformer _, transformed _
den transfer » gene transfer, heat transfer, data transfer
system peter » system better, system after, system paper
1 macao » _ macao, 1 macro, 2.1 macao
agua 2 » agua e, agua _, agua y
2 den » _ den, 2 der, 2 des
en la » et la
en a » e a, et a, eu 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 2 den transfer system peter ) OR ( agua ((en a) OR (en la)) transformer 1 macao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( agua 2 den transfer system peter ) or ( agua ((en a) OR (en la)) transformer 1 macao ))~".
• Adding a wildcard symbol may retrieve word variants: (( agua 2 den transfer system peter ) or ( agua ((en a) OR (en la)) transformer 1 macao ))*.