Perhaps you should try some spelling variations:
petruiv » petrouiv (Expand Search), peruiv (Expand Search), pentruiv (Expand Search)
petrouiv » petroouiv (Expand Search), perouiv (Expand Search)
petr » petro (Expand Search), per (Expand Search)
petru » petrou (Expand Search), peru (Expand Search), pentru (Expand Search)
petri » petroi (Expand Search), peri (Expand Search)
petrio » petroio (Expand Search), perio (Expand Search), petris (Expand Search), petro (Expand Search)
petrov » petroov (Expand Search), perov (Expand Search), petro (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 ((petruiv OR petrouiv) OR ((((petr OR (petru OR petri)) OR petrio) OR petrov) OR peter)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruiv OR petrouiv) OR ((((petr OR (petru OR petri)) OR petrio) OR petrov) OR peter)) o.s.*".