Talvez debería tentar con algunhas variantes ortográficas:
communication education » community education, communication communication, communication information
based extraction » based interaction, phase extraction, based education
education based » reduction based, education bicssc, education brazil
brain data » britain data, brain death, brain damage
terrain a » terrain _, terrains _, terrapin _

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication education based extraction ((((terrain data) or (brain data))) or (terrain a))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication education based extraction ((((terrain data) OR (brain data))) OR (terrain a)).
• Adding a wildcard symbol may retrieve word variants: communication education based extraction ((((terrain data) or (brain data))) or (terrain a))*.