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

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