Perhaps you should try some spelling variations:
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
petriuv » peteriuv (Expand Search), petriiuv (Expand Search), petruiuv (Expand Search)
petriuiv » peteriuiv (Expand Search), petriiuiv (Expand Search), petruiuiv (Expand Search)
petriiuiv » peteriiuiv (Expand Search), petriiiuiv (Expand Search), petruiiuiv (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (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 (((petruv OR petriuv) OR (petriuiv OR petriiuiv)) OR ((petruov OR peteruuov) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruv OR petriuv) OR (petriuiv OR petriiuiv)) OR ((petruov OR peteruuov) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petruv OR petriuv) OR (petriuiv OR petriiuiv)) OR ((petruov OR peteruuov) OR petr)) o.s.*.