Perhaps you should try some spelling variations:
petruiov » petrov (Expand Search), peteruiov (Expand Search), petriuiov (Expand Search), petruuiov (Expand Search)
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petruiuov (Expand Search)
petrv » peterv (Expand Search), petriv (Expand Search), petruv (Expand Search)
petruiuv » peteruiuv (Expand Search), petriuiuv (Expand Search), petruuiuv (Expand Search)
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petruiiv (Expand Search)
petriiiiv » peteriiiiv (Expand Search), petriiiiiv (Expand Search), petruiiiiv (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 ((((petruiov OR petriuov) OR (petrv OR petruiuv)) OR (petriiv OR petriiiiv)) OR petr) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petruiov OR petriuov) OR (petrv OR petruiuv)) OR (petriiv OR petriiiiv)) OR petr) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petruiov OR petriuov) OR (petrv OR petruiuv)) OR (petriiv OR petriiiiv)) OR petr) o.s.*.