Perhaps you should try some spelling variations:
petruv » peteruv (Expand Search), peruv (Expand Search), pentruv (Expand Search)
petruuv » peteruuv (Expand Search), peruuv (Expand Search), pentruuv (Expand Search)
petr » peter (Expand Search), per (Expand Search)
petro » petero (Expand Search), pero (Expand Search)
petru » peteru (Expand Search), peru (Expand Search), pentru (Expand Search)
petrov » peterov (Expand Search), perov (Expand Search)
petri » peteri (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 (((petruv OR (petruuv OR peteruuuv)) OR (petr OR ((petro OR petru) OR petrov))) OR petri) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruv OR (petruuv OR peteruuuv)) OR (petr OR ((petro OR petru) OR petrov))) OR petri) o.s.*".