Perhaps you should try some spelling variations:
"electrical machineer's" » "electrical machines", "electrical machinery", "electrical machine"
"electrical engineers's" » "electrical engineer's", "electrical engineering", "electric engineering", "electrical engineer'ss's", "electrical engineerings's", "practical engineers's", "electrical agingers's", "electrical lineers's", "electrical engineer'sers's"
"practical engineers's" » "practical engineering", "practical engineer", "pratical engineering"
"electrical engineer" » "electrical engineer's", "electrical engineering", "practical engineer", "electrical aginger", "electrical lineer", "electrical engineer'ser"
"electrical engine" » "electrical aging", "electrical line", "electrical engineer's"

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