Perhaps you should try some spelling variations:
perov » petrov (Expand Search)
petroviu » petrovici (Expand Search), petrov (Expand Search), petrovviu (Expand Search), petriviu (Expand Search), peteroviu (Expand Search), petrioviu (Expand Search), peroviu (Expand Search)
petro » petrov (Expand Search), petri (Expand Search), petero (Expand Search), petrio (Expand Search), pero (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), peruv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), peru (Expand Search)
petriiu » peteriiu (Expand Search), petriiiu (Expand Search), periiu (Expand Search)
petr » peter (Expand Search), petri (Expand Search), per (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop (((peterov OR perov) OR petruv) OR ((petru OR (petriiu OR petroviu)) OR (petro OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peterov OR perov) OR petruv) OR ((petru OR (petriiu OR petroviu)) OR (petro OR petr))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((peterov OR perov) OR petruv) OR ((petru OR (petriiu OR petroviu)) OR (petro OR petr))) o.s.*.