Perhaps you should try some spelling variations:
"electrical engineer's" » "electrical engine", "electric engineering", "electronics engineers", "electrical engine's", "practical engineer's", "electronics engineers's"
"practical engineering" » "physical engineering", "acoustical engineering", "structural engineering"
"electrical engineers" » "mechanical engineers", "chemical engineers", "electrical engines", "practical engineers", "electronics engineerss"
"electrical engineer" » "electrical engine", "practical engineer", "electronics engineers"
"electrical engineering" » "electrical engineing", "practical engineering", "electronics engineersing"
"optical engineering" » "chemical engineering", "biomedical engineering"

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