Perhaps you should try some spelling variations:
airways transport » railways transport, waterways transport, pathways transport
biomass transfer » biomass transport, mass transfer, diseases transfer
mass transports » des transports, les transports, mass transfers
mass transport » mass transfer

Try widening your search to All Fields.

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: %((biomass transfer) OR (((((mass transports) OR (mass transport))) OR (airways transport))))%22.
• Adding a wildcard symbol may retrieve word variants: %((biomass transfer) or (((((mass transports) or (mass transport))) or (airways transport))))%22*.