Perhaps you should try some spelling variations:
transfer africa » transfer price
data transfer » cash transfer, heat transfer
africa mark » africa market, africa macro, africa march
agent case » agent based, ageing case, ages case
luis rdf » luis f, luis de
rdf data » dlf data, imf data
age case » ages case, age care, age cave
luis a » luis f, luis c

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( luis a _ transfer africa mark ) or ( luis rdf data transfer ((agent case) OR (age case)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis a _ transfer africa mark ) OR ( luis rdf data transfer ((agent case) OR (age case)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis a _ transfer africa mark ) or ( luis rdf data transfer ((agent case) OR (age case)) ))*".