Perhaps you should try some spelling variations:
power transformer » power transformers, pour transformer, power transforming
transport amp » transport app, transport a, transport air
transformer 3 » transformers 3, transformer 1, transformer _
guias key » guias de
key power » grey power, den power, der power
amp acao » amp co, amp ceo
3 main » 2 main, 3 making
3 can » _ can

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 main) OR (1 main)) transport amp acao ) or ( guias key power transformer 3 can ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis ((3 main) OR (1 main)) transport amp acao ) OR ( guias key power transformer 3 can )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis ((3 main) OR (1 main)) transport amp acao ) or ( guias key power transformer 3 can ))".
• Adding a wildcard symbol may retrieve word variants: (( luis ((3 main) OR (1 main)) transport amp acao ) or ( guias key power transformer 3 can ))*.