Perhaps you should try some spelling variations:
cash transfer » cash transfers
transport a » transport _, transport data
transfer a » transfer _, transfer 3, transfer 4
coal sea » coal seams, coal use, coal bed
guias do » guia do, guias de, guia de
a do » a dot, _ do, a d
a a » a la

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