Perhaps you should try some spelling variations:
formal transfer » informal transfers, social transfer, fiscal transfer
transfer costs » transport costs, transfer amounts
transfer fees » transfer from
costs case » costs cash
12 social » 1.2 social, 1 social, 2.2 social
fees cao » fees a

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( agua _ formal transfer costs case ) or ( aguas ((12 social) OR (2 social)) transfer fees cao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( agua _ formal transfer costs case ) OR ( aguas ((12 social) OR (2 social)) transfer fees cao ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( agua _ formal transfer costs case ) or ( aguas ((12 social) OR (2 social)) transfer fees cao ))*".