Perhaps you should try some spelling variations:
idea transformers » power transformers, 3 transformers, _ transformers
basic transport » bus transport, gas transport, benin transport
transport em » transport en, transport et, transport amp
guias key » guias de
key idea » key ideas, very idea, key item
3 basic » 2 basic, 1 basic, 3.1 basic
luis 3 » luis f, luis c, luis a

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( luis 3 basic transport em acao ) or ( guias key idea transformers _ can ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis 3 basic transport em acao ) OR ( guias key idea transformers _ can )).
• Adding a wildcard symbol may retrieve word variants: (( luis 3 basic transport em acao ) or ( guias key idea transformers _ can ))*.