Perhaps you should try some spelling variations:
petruov » petrov (Expand Search), peteruov (Expand Search), petruuov (Expand Search), petrouov (Expand Search)
petruv » petru (Expand Search), petrov (Expand Search), peteruv (Expand Search), petruuv (Expand Search), petrouv (Expand Search)
petrv » petrov (Expand Search), petru (Expand Search), petro (Expand Search), peterv (Expand Search), petruv (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petriu » peteriu (Expand Search), petruiu (Expand Search), petroiu (Expand Search), petru (Expand Search), petris (Expand Search)
petriio » peteriio (Expand Search), petruiio (Expand Search), petroiio (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (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 (((petruov OR petruv) OR (petrv OR petr)) OR ((petriu OR (peterio OR petriio)) OR petri)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruov OR petruv) OR (petrv OR petr)) OR ((petriu OR (peterio OR petriio)) OR petri)) o.s.*".