Perhaps you should try some spelling variations:
petruov » petrov (Expand Search), peteruov (Expand Search), petrouov (Expand Search), peruov (Expand Search), pentruov (Expand Search)
petruuiv » peteruuiv (Expand Search), petrouuiv (Expand Search), peruuiv (Expand Search), pentruuiv (Expand Search)
petruuuuiv » peteruuuuiv (Expand Search), petrouuuuiv (Expand Search), peruuuuiv (Expand Search), pentruuuuiv (Expand Search)
petruuv » peteruuv (Expand Search), petrouuv (Expand Search), peruuv (Expand Search), pentruuv (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petru » peteru (Expand Search), petrou (Expand Search), peru (Expand Search), pentru (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (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 ((petruov OR ((petruuiv OR petruuuuiv) OR petruuv)) OR ((petr OR petru) OR petri)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruov OR ((petruuiv OR petruuuuiv) OR petruuv)) OR ((petr OR petru) OR petri)) o.s.*".