Perhaps you should try some spelling variations:
transport signal » transform signal, transport design, transport annual
sea transport » road transport, bus transport
transfers 6 » transfers 3, transfers 2, transfers 7
guias pde » guias de, guia de
signal 4 » signal _, signal 3, signal 6
pde case » ode case, edge case, idle case
own sea » own ses, own seed, own real
aguas » agus, agua

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: (( aguas own sea transport signal 4 ) OR ( guias pde case ((transfers 6) OR (transfers _)) case ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( aguas own sea transport signal 4 ) or ( guias pde case ((transfers 6) OR (transfers _)) case ))~".
• Adding a wildcard symbol may retrieve word variants: (( aguas own sea transport signal 4 ) or ( guias pde case ((transfers 6) OR (transfers _)) case ))*.