Perhaps you should try some spelling variations:
petriiov » petrov (Expand Search), peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petriuoov » peteriuoov (Expand Search), petriiuoov (Expand Search), petruiuoov (Expand Search)
petruiuoov » peteruiuoov (Expand Search), petriuiuoov (Expand Search), petruuiuoov (Expand Search)
petriou » peteriou (Expand Search), petriiou (Expand Search), petruiou (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 petriiov) OR (petriuoov OR petruiuoov)) OR ((peterou OR petriou) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriov OR petriiov) OR (petriuoov OR petruiuoov)) OR ((peterou OR petriou) OR petr)) o.s.*".