Perhaps you should try some spelling variations:
social transfers » fiscal transfers
formal transfer » informal transfers, social transfer, fiscal transfer
transfer cost » transfer costs, transfer cash, transfer bot
model social » modern social, local social
transfers de » transferts de, transfert de, transfers made
cost cash » costs cash, costs case, cost base
e formal » _ formal, a formal, 3 formal
de code » le code, de cote, de cordel

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: (( (agua OR gua) e formal transfer cost cash ) OR ( threat model social transfers de code ))~.
• Adding a wildcard symbol may retrieve word variants: (( (agua or gua) e formal transfer cost cash ) or ( threat model social transfers de code ))*.