Perhaps you should try some spelling variations:
practical engineering » electrical engineering, optical engineering, physical engineering
electric engineering » electrical engineering, electronic engineering, electronics engineering
practical engineers » practicing engineers, electrical engineers, practical encounters
practical engineer » electrical engineers

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: (((( practical engineer ) OR ( practical engineering ))) OR ((((( electric engineering ) OR ( practical engineering ))) OR ( practical engineers )))).
• Adding a wildcard symbol may retrieve word variants: (((( practical engineer ) or ( practical engineering ))) or ((((( electric engineering ) or ( practical engineering ))) or ( practical engineers ))))*.