Perhaps you should try some spelling variations:
"theoretical and solid mechanical" » "theoretical and solids mechanical", "theoretical and solar mechanical", "theoretical and solid technical"
"theoretical and solid mechanisms" » "theoretical and solids mechanisms", "theoretical and coli mechanisms", "theoretical and cold mechanisms"

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