Perhaps you should try some spelling variations:
petro » petrov (Expand Search), petru (Expand Search), petero (Expand Search), petruo (Expand Search), pero (Expand Search)
petruiov » petrov (Expand Search), peteruiov (Expand Search), petruuiov (Expand Search), peruiov (Expand Search)
perov » petrov (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), peri (Expand Search)
petrv » peterv (Expand Search), petruv (Expand Search), perv (Expand Search)
petr » peter (Expand Search), petru (Expand Search), per (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 ((((petro OR peruo) OR petri) OR (petruiov OR perov)) OR ((petrv OR peteruv) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petro OR peruo) OR petri) OR (petruiov OR perov)) OR ((petrv OR peteruv) OR petr)) o.s.*".