Perhaps you should try some spelling variations:
social transfers » fiscal transfers
formal transfer » informal transfers, social transfer, fiscal transfer
transfer costs » transport costs, transfer amounts
transfers der » transfer der, transfert de, transfers bei
langues via » langues la
costs chap » costs ch, costs chapter
via social » vista social, asia social, rica social
vs formal » vs informal, its formal, _ formal
agens vs » agens i, genes vs
der caso » de caso, del caso, der cas

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: (( agens vs formal transfer costs chap ) OR ( langues via social transfers der caso ))~.
• Adding a wildcard symbol may retrieve word variants: (( agens vs formal transfer costs chap ) or ( langues via social transfers der caso ))*.