Perhaps you should try some spelling variations:
idea transformers » power transformers, 3 transformers, _ transformers
transformers 4.3 » transformers 4.2, transformer 3.3, transformers 3
beni transport » benin transport, den transport, en transport
transport em » transport en, transport et, transport amp
guias key » guias de
key idea » key ideas, very idea, key item
4.3 can » 2.3 can, 4.3 cnn, 4.3 clean
luis e » luis f, luis c, luis a
e beni » de beni, i beni

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( luis e beni transport em acao ) or ( guias key idea transformers 4.3 can ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis e beni transport em acao ) OR ( guias key idea transformers 4.3 can )).
• Adding a wildcard symbol may retrieve word variants: (( luis e beni transport em acao ) or ( guias key idea transformers 4.3 can ))*.