Perhaps you should try some spelling variations:
"electrical engineers's" » "electrical engineer's", "electrical engineering", "electrical engine"
"electric engineering" » "electrical engineering", "electronic engineering", "electronics engineering"
"electrical engines's" » "electrical engineer's", "electrical engine", "electrical engineering"
"electrical line" » "electrical life", "electrical engine", "electrical aging"

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