Perhaps you should try some spelling variations:
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petrovo » petrov (Expand Search), peterovo (Expand Search), petroovo (Expand Search), perovo (Expand Search)
petriuo » peteriuo (Expand Search), petroiuo (Expand Search), periuo (Expand Search)
petrouuo » peterouuo (Expand Search), petroouuo (Expand Search), perouuo (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (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 (periov OR ((petru OR ((petrovo OR petriuo) OR petrouuo)) OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (periov OR ((petru OR ((petrovo OR petriuo) OR petrouuo)) OR (petr OR petri))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (periov OR ((petru OR ((petrovo OR petriuo) OR petrouuo)) OR (petr OR petri))) o.s.*.