Perhaps you should try some spelling variations:
transit system » transit systems, transport system, transport systems
a transformer » _ transformer, a transformed, a transformar
3 transformer » 3 transformers, _ transformer, 3 transformar
system peter » system better, system after, system paper
den transit » de transit, der transit, new transit
agua en » agua e
agua 2 » agua e, agua _, agua y
2 den » _ den, 2 der, 2 des

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 transit system peter ) OR ( agua en ((a transformer) OR (3 transformer)) _ macao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( agua 2 den transit system peter ) or ( agua en ((a transformer) OR (3 transformer)) _ macao ))~".
• Adding a wildcard symbol may retrieve word variants: (( agua 2 den transit system peter ) or ( agua en ((a transformer) OR (3 transformer)) _ macao ))*.