Perhaps you should try some spelling variations:
petruoov » petrov (Expand Search), peteruoov (Expand Search), petriuoov (Expand Search), petruuoov (Expand Search)
petriuiiov » peteriuiiov (Expand Search), petriiuiiov (Expand Search), petruiuiiov (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
petriuuv » peteriuuv (Expand Search), petriiuuv (Expand Search), petruiuuv (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petrio » peterio (Expand Search), petriio (Expand Search), petruio (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 (((petruoov OR petriuiiov) OR (petruv OR petriuuv)) OR ((petriu OR petrio) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruoov OR petriuiiov) OR (petruv OR petriuuv)) OR ((petriu OR petrio) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petruoov OR petriuiiov) OR (petruv OR petriuuv)) OR ((petriu OR petrio) OR petr)) o.s.*.