Perhaps you should try some spelling variations:
ocean transport » urban transport, green transport, sea transport
transport plan » transport planning, transport policy
has transfers » cash transfers, des transfers, gas transfer
transfers fee » transfer fee, transfer fees, transfers bei
luis debt » luis de, u.s debt
debt has » debt cash, debt a, debt how
f ocean » _ ocean, 1 ocean, 3 ocean

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: (( luis debt has transfers fee (acao OR mcao) ) OR ( luis f ocean transport plan mcao ))~.
• Adding a wildcard symbol may retrieve word variants: (( luis debt has transfers fee (acao or mcao) ) or ( luis f ocean transport plan mcao ))*.