Perhaps you should try some spelling variations:
"electrical machineers" » "electrical machines", "electrical machinery", "electrical machine"
"electrical engineer's" » "electrical engineers", "electrical engineering", "electric engineering", "electrical engineerser's", "electrical aginger's", "electrical lineer's"
"mechanical engineers" » "mechanical engineering"
"electrical engine" » "electrical engineers", "electrical aging", "electrical line"
"electrical load" » "electricity load"

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