Perhaps you should try some spelling variations:
"electrical engineers's" » "electric engineering", "electrical engine", "electronics engineer's"
"practical engineering" » "optical engineering", "physical engineering", "acoustical engineering"
"electrical engineer's" » "electrical engine", "electric engineering", "electronics engineers"
"practical engineers's" » "pratical engineering", "practices engineering", "practicing 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 ((((((("electrical engineers's") OR ("electrical engineer's"))) OR ("practical engineers's"))) OR ("electrical engineering")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"practical engineer\") or (\"practical engineering\"))) or (((((((\"electrical engineers's\") OR (\"electrical engineer's\"))) or (\"practical engineers's\"))) or (\"electrical engineering\"))))".
• Removing quotes may allow a broader search: (((( practical engineer ) or ( practical engineering ))) or ((((((( electrical engineers's ) OR ( electrical engineer's ))) or ( practical engineers's ))) or ( electrical engineering )))).
• Adding a wildcard symbol may retrieve word variants: (((("practical engineer") or ("practical engineering"))) or ((((((("electrical engineers's") OR ("electrical engineer's"))) or ("practical engineers's"))) or ("electrical engineering"))))*.