Perhaps you should try some spelling variations:
private paperskih » private partnerskih
private papership » private partnership, private ownership, private partnerships
private payers » private prayers, private payer, private payors
private papers » private prayer, private property, private learners

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: public ((((((private paperskih) OR (private payers))) OR (private papers))) OR (private papership)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "public ((((((private paperskih) OR (private payers))) or (private papers))) or (private papership))".
• Adding a wildcard symbol may retrieve word variants: public ((((((private paperskih) OR (private payers))) or (private papers))) or (private papership))*.