Perhaps you should try some spelling variations:
partons lectures » paulton's lectures, paris lectures, atoms lectures
parsons lectures » paris lectures, phonons lectures, orations lectures
nourdin lectures » norton lectures, fourteen lectures, four lectures

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: the charles eliot ((((partons lectures) OR (parsons lectures))) OR (nourdin lectures)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "the charles eliot ((((partons lectures) OR (parsons lectures))) or (nourdin lectures))".
• Adding a wildcard symbol may retrieve word variants: the charles eliot ((((partons lectures) OR (parsons lectures))) or (nourdin lectures))*.