Perhaps you should try some spelling variations:
"theoretical geophysics" » "theoretical astrophysics", "theoretical mechanics", "theoretical topics"
"theoretical physicist" » "theoretical physicists", "theoretical basics"
"theoretical physics" » "mathematical physics", "theoretical analysis"

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