Perhaps you should try some spelling variations:
petroov » petrov (Expand Search), petrioov (Expand Search), petrooov (Expand Search)
petriv » petri (Expand Search), petrov (Expand Search), petriiv (Expand Search), petroiv (Expand Search)
petris » petri (Expand Search), petriis (Expand Search), petrois (Expand Search)
petr » petri (Expand Search), petro (Expand Search)
petru » petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
petriu » petriiu (Expand Search), petroiu (Expand Search), petri (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 ((petroov OR (petriv OR petris)) OR (peter OR (petr OR ((petru OR petriu) OR per)))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petroov OR (petriv OR petris)) OR (peter OR (petr OR ((petru OR petriu) OR per)))) o.s.*".