Perhaps you should try some spelling variations:
"mathematical physical" » "mathematical physics", "mathematics physics", "mathematical statistical"
"mathematical basics" » "mathematical basis", "mathematical physics", "mathematical statistics"
"mathematical topics" » "mathematical tools", "mathematical theories", "mathematical physics"

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