Perhaps you should try some spelling variations:
transfers ai » transfers i, transfers bei, transfers dau
transfer der » transfer fees, transfer _
key idea » key ideas, very idea, key item
guias de » guia de, guide de, aguas de
der chat » der charta, der cheap, der ca
de idea » new idea, one idea
heat » head

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( aguas ((de idea) or (key idea)) transfers ai cao ) or ( guias de heat transfer der chat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( aguas ((de idea) OR (key idea)) transfers ai cao ) OR ( guias de heat transfer der chat )).
• Adding a wildcard symbol may retrieve word variants: (( aguas ((de idea) or (key idea)) transfers ai cao ) or ( guias de heat transfer der chat ))*.