Perhaps you should try some spelling variations:
idea transformers » power transformers, 3 transformers, _ transformers
boues transport » bus transport, nodes transport, goods transport
transport em » transport en, transport et, transport amp
guias key » guias de
le boues » les boues, de boues, des boues
key idea » key ideas, very idea, key item
puis le » depuis le
5.2 can » 5.2 case
2.2 can » 2.2 case

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( puis le boues transport em acao ) OR ( guias key idea transformers ((5.2 can) OR (2.2 can)) ))~.
• Adding a wildcard symbol may retrieve word variants: (( puis le boues transport em acao ) or ( guias key idea transformers ((5.2 can) or (2.2 can)) ))*.