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

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"mechanical engineering survey\") OR (\"mechanical engineering nerve\"))*".
• Removing quotes may allow a broader search: (( mechanical engineering survey ) OR ( mechanical engineering nerve ))*.