Perhaps you should try some spelling variations:
petrov » petro (Expand Search), peterov (Expand Search), petruov (Expand Search), petroov (Expand Search)
petriu » petru (Expand Search), petris (Expand Search), peteriu (Expand Search), petruiu (Expand Search), petroiu (Expand Search)
petruo » petru (Expand Search), petro (Expand Search), peteruo (Expand Search), petruuo (Expand Search), petrouo (Expand Search)
petrio » petris (Expand Search), petro (Expand Search), peterio (Expand Search), petruio (Expand Search), petroio (Expand Search)
petruui » peteruui (Expand Search), petruuui (Expand Search), petrouui (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (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 (peterov OR (((((petrov OR petriu) OR petruo) OR petrio) OR petruui) OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (peterov OR (((((petrov OR petriu) OR petruo) OR petrio) OR petruui) OR (petr OR petri))) o.s.*".