Perhaps you should try some spelling variations:
peteriiv » peterdi (Expand Search)
petrouiv » peterouiv (Expand Search), petruouiv (Expand Search), petroouiv (Expand Search)
petruiuiv » peteruiuiv (Expand Search), petruuiuiv (Expand Search), petrouiuiv (Expand Search)
petrov » peterov (Expand Search), petruov (Expand Search), petroov (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (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 ((peteriiv OR (petrouiv OR petruiuiv)) OR (((petrov OR petero) OR petri) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteriiv OR (petrouiv OR petruiuiv)) OR (((petrov OR petero) OR petri) OR petr)) o.s.*".