Perhaps you should try some spelling variations:
petruov » peteruov (Expand Search), petrouov (Expand Search), peruov (Expand Search)
petriuiov » peteriuiov (Expand Search), petroiuiov (Expand Search), periuiov (Expand Search)
petruuiiov » peteruuiiov (Expand Search), petrouuiiov (Expand Search), peruuiiov (Expand Search)
petru » peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (Expand Search)
petr » peter (Expand Search), petro (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 ((petruov OR (petriuiov OR petruuiiov)) OR (((petru OR pero) OR petri) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruov OR (petriuiov OR petruuiiov)) OR (((petru OR pero) OR petri) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petruov OR (petriuiov OR petruuiiov)) OR (((petru OR pero) OR petri) OR petr)) o.s.*.