Perhaps you should try some spelling variations:
power transformers » power transformer, pour transformer, power transforming
transport em » transport en, transport et, transport amp
guias de » guia de, guide de, aguas de
de power » de poder, me power, dwde power
4.3 can » 2.3 can, 4.3 clean, 4.3 case
luis a » luis f, luis c
a bus » a bush, a busy, _ bus

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 bus transport em acao ) or ( guias de power transformers ((4.3 can) or (4.3 cnn)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis a bus transport em acao ) OR ( guias de power transformers ((4.3 can) OR (4.3 cnn)) )).
• Adding a wildcard symbol may retrieve word variants: (( luis a bus transport em acao ) or ( guias de power transformers ((4.3 can) or (4.3 cnn)) ))*.