Perhaps you should try some spelling variations:
"classical mechanistic" » "classical mechanism", "classical mechanisms", "classical mechanics"
"classical mechanical" » "classical mechanics", "chemical mechanical", "statistical mechanical"
"physical mechanical" » "physico mechanical", "physical mechanisms", "chemical mechanical"

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