Perhaps you should try some spelling variations:
petruouiv » peteruouiv (Expand Search), petriuouiv (Expand Search), petruuouiv (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petruoi (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petroov » peteroov (Expand Search), petrioov (Expand Search), petruoov (Expand Search)
petruoov » peteruoov (Expand Search), petriuoov (Expand Search), petruuoov (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop (petruouiv OR ((petroi OR (petrov OR (petroov OR petruoov))) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruouiv OR ((petroi OR (petrov OR (petroov OR petruoov))) OR petr)) o.s.*".