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

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 mechanics") OR ("statistical mechanical"))) OR ((("classical mechanisms") OR ("classical mechanistic")))).
• Removing quotes may allow a broader search: (((( classical mechanics ) or ( statistical mechanical ))) or ((( classical mechanisms ) or ( classical mechanistic )))).
• Adding a wildcard symbol may retrieve word variants: (((("classical mechanics") or ("statistical mechanical"))) or ((("classical mechanisms") or ("classical mechanistic"))))*.