Perhaps you should try some spelling variations:
"electrical engineer's" » "electrical engineering", "electric engineering", "electronics engineers", "electrical aginger's", "electrical machineer's", "electrical imaginger's"
"electrical engineers" » "electrical engineering", "chemical engineers", "electrical agingers", "electrical machineers", "electrical imagingers"
"mechanical engineers" » "mechanical engineering"
"electrical engine" » "electrical aging", "electrical machine", "electrical imaging"
"electrical line" » "electrical life", "electrical aging", "electrical 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: (((((("electrical engineers") OR ("mechanical engineers"))) OR ("electrical engineer's"))) OR ((("electrical engine") OR ("electrical line"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"electrical engineers\") OR (\"mechanical engineers\"))) or (\"electrical engineer's\"))) or (((\"electrical engine\") or (\"electrical line\"))))*".
• Removing quotes may allow a broader search: (((((( electrical engineers ) OR ( mechanical engineers ))) or ( electrical engineer's ))) or ((( electrical engine ) or ( electrical line ))))*.