Perhaps you should try some spelling variations:
petruoov » petrov (Expand Search), peteruoov (Expand Search), petriuoov (Expand Search), petruuoov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petroov » peteroov (Expand Search), petrioov (Expand Search), petruoov (Expand Search)
petruiuov » peteruiuov (Expand Search), petriuiuov (Expand Search), petruuiuov (Expand Search)
petrioiuov » peterioiuov (Expand Search), petriioiuov (Expand Search), petruioiuov (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 (((petriov OR (petroov OR petruoov)) OR (petruiuov OR petrioiuov)) OR (peterou OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriov OR (petroov OR petruoov)) OR (petruiuov OR petrioiuov)) OR (peterou OR petr)) o.s.*".