Perhaps you should try some spelling variations:
transfers costs » transfer costs, transfer cost, transfers foster
gene transfer » wire transfer, heat transfer, land transfer
file transfer » wire transfer, risk transfer, food transfer
luis rdf » luis de
rdf cash » do cash, run cash
de carl » des carl, dr carl, de cara

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 f ((gene transfer) OR (file transfer)) de carl ) OR ( luis rdf cash transfers costs _ ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis f ((gene transfer) OR (file transfer)) de carl ) or ( luis rdf cash transfers costs _ ))~".
• Adding a wildcard symbol may retrieve word variants: (( luis f ((gene transfer) OR (file transfer)) de carl ) or ( luis rdf cash transfers costs _ ))*.