Perhaps you should try some spelling variations:
der transformer » dc transformer, se transformer, der transferamter
firms across » farms across, firms access, reforms across
transfer bei » transfer beim, transfers bei, transfer der
fire across » care across, life across, time across
bis und » bis ende
macao » macro, macau, cacao

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: (( bis und der transformer ((fire across) OR (firms across)) ) OR ( luis f _ transfer bei macao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( bis und der transformer ((fire across) OR (firms across)) ) or ( luis f _ transfer bei macao ))~".
• Adding a wildcard symbol may retrieve word variants: (( bis und der transformer ((fire across) OR (firms across)) ) or ( luis f _ transfer bei macao ))*.