Perhaps you should try some spelling variations:
petriov » petrov (Expand Search), petriiov (Expand Search), petroiov (Expand Search), periov (Expand Search)
petrv » petrov (Expand Search), petri (Expand Search), petro (Expand Search), petriv (Expand Search), perv (Expand Search)
petriuo » petriiuo (Expand Search), petroiuo (Expand Search), periuo (Expand Search)
petriiuo » petriiiuo (Expand Search), petroiiuo (Expand Search), periiuo (Expand Search)
petr » petri (Expand Search), petro (Expand Search), per (Expand Search)
petru » petriu (Expand Search), petrou (Expand Search), peru (Expand Search), pentru (Expand Search), petri (Expand Search)
petrou » petriou (Expand Search), petroou (Expand Search), perou (Expand Search), petro (Expand Search), petrov (Expand Search), petrow (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 ((petriov OR petrv) OR ((petriuo OR petriiuo) OR ((petr OR (petru OR petrou)) OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR petrv) OR ((petriuo OR petriiuo) OR ((petr OR (petru OR petrou)) OR peter))) o.s.*".