Perhaps you should try some spelling variations:
transformation und » transformation _, transformation a
waste transfer » waste transport, cash transfer, data transfer
wire transfer » risk transfer
aguas de » aguas del, aguas do, vagues de
guias 3 » guias de
fairs a » fairs _, fair a, fairs 3
und a » und _, und 2, und 3

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: (( guias 3 _ transformation und a ) OR ( aguas de ((waste transfer) OR (wire transfer)) fairs a ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( guias 3 _ transformation und a ) or ( aguas de ((waste transfer) OR (wire transfer)) fairs a ))~".
• Adding a wildcard symbol may retrieve word variants: (( guias 3 _ transformation und a ) or ( aguas de ((waste transfer) OR (wire transfer)) fairs a ))*.