Perhaps you should try some spelling variations:
"statistical mechanics" » "statistics mechanics", "statistical mechanisms", "statistical mechanical"
"statistical methods" » "statistics methods"
"classical mechanics" » "classical mechanisms", "classical mechanical"

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