Perhaps you should try some spelling variations:
"electrical engineering survey" » "electrical engineering surveying", "electrical engineering security", "electrical engineering service"
"mechanical engineering nerve" » "mechanical engineering server", "mechanical engineering ner", "mechanical engineering service"

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