Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
peteroiu » peterdi (Expand Search)
peteroov » petrov (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (Expand Search)
petroov » peteroov (Expand Search), petrioov (Expand Search), petruoov (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 ((peteriov OR petruv) OR ((petrou OR peteroiu) OR ((petroov OR peteroov) OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteriov OR petruv) OR ((petrou OR peteroiu) OR ((petroov OR peteroov) OR petr))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peteriov OR petruv) OR ((petrou OR peteroiu) OR ((petroov OR peteroov) OR petr))) o.s.*.