Perhaps you should try some spelling variations:
informal transport » informal transfers, affordable transport, industrial transport
social transferts » social transfers, social transfer, local transfers
transport powers » transport workers, transport poverty, transport users
powers chapter » power chapter, papers chapter, polymers chapter
transferts de » transfert de, transfert des, transferts et
vagues die » vagues de, vague de
die social » die sociale, die socialen, time social

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: (( aga _ informal transport powers chapter ) OR ( vagues die social transferts de (cas OR cash) ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( aga _ informal transport powers chapter ) or ( vagues die social transferts de (cas OR cash) ))~".
• Adding a wildcard symbol may retrieve word variants: (( aga _ informal transport powers chapter ) or ( vagues die social transferts de (cas OR cash) ))*.