Perhaps you should try some spelling variations:
transformer varied » transformer based, transformer infrared
der transformer » dc transformer, se transformer, der transferamter
varied across » varies across, carried across, vary across
transfers et » transferts et, transfert et, transfers bei
et macao » _ macao
bis nnd » bis ende
nnd der » und der, land der, rand der
luis pe » luis e, luis de

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 nnd der transformer varied across ) OR ( luis pe _ transfers et macao ))~.
• Adding a wildcard symbol may retrieve word variants: (( bis nnd der transformer varied across ) or ( luis pe _ transfers et macao ))*.