Perhaps you should try some spelling variations:
"acoustical engineering" » "optical engineering", "biomedical engineering", "industrial engineering"
"electrical engineers" » "mechanical engineers", "chemical engineers", "electrical engineer'ss", "electrical engines", "practical engineers"
"electrical engineer" » "electrical engineer's", "electrical engine", "practical engineer"
"electrical engineering" » "electrical engineer'sing", "electrical engineing", "practical 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 engineers"))) OR ((("electrical engineering") OR ("acoustical engineering")))).
• Removing quotes may allow a broader search: (((( electrical engineer ) or ( electrical engineers ))) or ((( electrical engineering ) or ( acoustical engineering )))).
• Adding a wildcard symbol may retrieve word variants: (((("electrical engineer") or ("electrical engineers"))) or ((("electrical engineering") or ("acoustical engineering"))))*.