Perhaps you should try some spelling variations:
"electrical engineers's" » "electrical engineering", "electric engineering", "electrical engine"
"electrical engineer's" » "electrical engineering", "electrical engine", "electric engineering"
"practical engineers's" » "practical engineering", "practices engineering", "practicing engineers", "practical engineerings's"
"pratical engineering" » "practical engineering", "critical engineering", "political engineering"
"electrical engineing" » "electrical engineering", "electrical engine", "electric engineering"
"practical engineer" » "practical engineering"

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: (("electrical engineer's") OR ((((("electrical engineers's") OR ((((("practical engineers's") OR ("practical engineer"))) OR ("pratical engineering"))))) OR ("electrical engineing")))).
• Removing quotes may allow a broader search: (( electrical engineer's ) or ((((( electrical engineers's ) or ((((( practical engineers's ) or ( practical engineer ))) or ( pratical engineering ))))) or ( electrical engineing )))).
• Adding a wildcard symbol may retrieve word variants: (("electrical engineer's") or ((((("electrical engineers's") or ((((("practical engineers's") or ("practical engineer"))) or ("pratical engineering"))))) or ("electrical engineing"))))*.