Perhaps you should try some spelling variations:
"mathematical geophysics" » "mathematical physics", "mathematical physical", "mathematical genetics"
"mathematical topics" » "mathematical tools", "mathematical theories", "mathematical physics"
"mathematics physics" » "mathematical physics", "mathematische physik"

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