Perhaps you should try some spelling variations:
human transport » urban transport, rural transport, ocean transport
transport air » transport a, transport data, transport _
data transfer » cash transfer, heat transfer
transfer sur » transfer der, transfer auf, transfer aus
dem human » der human, des human, term human
luis dem » luis de, aus dem, luis e
luis c » luis f
c data » 1 data, lcc data
sur a » sur la, sgr a, sul a
mass » maps

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: (( luis dem human transport air mass ) OR ( luis c data transfer sur a ))~.
• Adding a wildcard symbol may retrieve word variants: (( luis dem human transport air mass ) or ( luis c data transfer sur a ))*.