Perhaps you should try some spelling variations:
"mechanical engineers" » "mechanical engineering"
"electrical engineer" » "electrical engineers", "electrical engineer's", "electrical engineering", "electrical engineerser", "electrical aginger", "electrical lineer"
"electrical engine" » "electrical engineers", "electrical aging", "electrical line"

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