Perhaps you should try some spelling variations:
"mathematical physical" » "mathematical physics", "mathematical statistical"
"mathematics physics" » "mathematical physics", "mathematische physik"
"mathematical basics" » "mathematical basis", "mathematical physics", "mathematical topics"

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: (((("mathematical physical") OR ("mathematics physics"))) OR ("mathematical basics")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mathematical physical\") OR (\"mathematics physics\"))) or (\"mathematical basics\"))".
• Removing quotes may allow a broader search: (((( mathematical physical ) OR ( mathematics physics ))) or ( mathematical basics )).
• Adding a wildcard symbol may retrieve word variants: (((("mathematical physical") OR ("mathematics physics"))) or ("mathematical basics"))*.