Perhaps you should try some spelling variations:
transport prices » transport price, transport services, transport policies
transfer risks » transfer risk
mass transport » gas transport, mass transit, bus transport
data transfer » cash transfer, heat transfer
guias de » guia de, guide de, aguas de
prices a » prices _
risks 3 » risks _, risks 4, risks a
de mass » de masse, de mais, de masa

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: (( guias 3 data transfer risks 3 ) OR ( guias de mass transport prices a ))~.
• Adding a wildcard symbol may retrieve word variants: (( guias 3 data transfer risks 3 ) or ( guias de mass transport prices a ))*.