Perhaps you should try some spelling variations:
bases transfers » based transfers, basin transfers, based transfer
idea transport » ideas transport, sea transport, de transport
transport code » transport mode, transport modes, transport model
vague key » value keys, sage key, vague de
key idea » key ideas, very idea, key item
guias de » guia de, guide de, aguas de
de bases » de base, de gases, les bases
code a » code _, code 2

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: (( vague key idea transport code a ) OR ( guias de bases transfers _ a ))~.
• Adding a wildcard symbol may retrieve word variants: (( vague key idea transport code a ) or ( guias de bases transfers _ a ))*.