Perhaps you should try some spelling variations:
"electrical engineer's" » "electrical engineers", "electronics engineers", "electronic engineers", "electrical engineerser's", "electrical aginger's", "electrical lineer's"
"electrical machineers" » "electrical machines", "electrical machine", "electric machines"
"electric engineering" » "electronic engineering", "electronics engineering", "genetic engineering"
"electrical machinery" » "electrical machines", "electric machinery", "electrical machine"
"electrical engineering" » "electrical engineersering", "electrical agingering", "electrical lineering"
"electrical engine" » "electrical engineers", "electrical aging", "electrical line"

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 engineering") OR ((("electrical engineer's") OR ("electric engineering"))))) OR ((("electrical engine") OR ((("electrical machineers") OR ("electrical machinery")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"electrical engineering\") or (((\"electrical engineer's\") or (\"electric engineering\"))))) or (((\"electrical engine\") or (((\"electrical machineers\") OR (\"electrical machinery\"))))))".
• Removing quotes may allow a broader search: (((( electrical engineering ) or ((( electrical engineer's ) or ( electric engineering ))))) or ((( electrical engine ) or ((( electrical machineers ) OR ( electrical machinery )))))).
• Adding a wildcard symbol may retrieve word variants: (((("electrical engineering") or ((("electrical engineer's") or ("electric engineering"))))) or ((("electrical engine") or ((("electrical machineers") OR ("electrical machinery"))))))*.