Perhaps you should try some spelling variations:
formal transfer » informal transfers, social transfer, fiscal transfer
transfer costs » transport costs, transfer amounts
local transfer » local transfers, social transfer, social transfers
transfer der » transfer fees, transfer _
langues via » langues la
costs chap » costs ch, costs chapter
vs formal » vs informal, its formal, _ formal
via local » asia local, a local, via modal
aguas vs » agens vs, aguas de, aguas do
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: (( aguas vs formal transfer costs chap ) OR ( langues via local transfer der caso ))~.
• Adding a wildcard symbol may retrieve word variants: (( aguas vs formal transfer costs chap ) or ( langues via local transfer der caso ))*.