Perhaps you should try some spelling variations:
transport air » transport data, transport _, transport 2.1
cash transfer » cash transfers
transport a » transport _, transport data
transfer 4 » transfer _, transfer 3, transfer a
areas co » areas coal, areas act, areas can
guias do » guia do, guias de, guia de
co seam » coal seam, ice seam

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: (( areas co seam ((transport air) OR (transport a)) _ ) OR ( guias do cash transfer 4 a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas co seam ((transport air) OR (transport a)) _ ) or ( guias do cash transfer 4 a ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas co seam ((transport air) OR (transport a)) _ ) or ( guias do cash transfer 4 a ))*.