Perhaps you should try some spelling variations:
"mechanical engineering properties" » "mechanical engineering projects", "mechanical engineering proceedings", "mechanical engineering perspective"
"electrical engineering properties" » "electrical engineering projects", "electrical engineering proceedings", "electrical engineering perspective"
"mechanical engineering processes" » "mechanical engineering process", "mechanical engineering profession", "mechanical engineering proceedings"

Try widening your search to All Fields.

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